sharkbiter shares a report from Space.com: The suspense is over: Two tiny hopping robots have successfully landed on an asteroid called Ryugu -- and they've even sent back some wild postcards from their new home. The tiny rovers are part of the Japan Aerospace Exploration Agency's Hayabusa2 asteroid sample-return mission. Engineers with the agency deployed the robots early Friday (Sept. 21), but JAXA waited until today (Sept. 22) to confirm the operation was successful and both rovers made the landing safely.

In order to complete the deployment, the main spacecraft of the Hayabusa2 mission lowered itself carefully down toward the surface until it was just 180 feet (55 meters) up. After the rovers were on their way, the spacecraft raised itself back up to its typical altitude of about 12.5 miles above the asteroid's surface (20 kilometers). The agency still has two more deployments yet to accomplish before it can rest easy: Hayabusa2 is scheduled to deploy a larger rover called MASCOT in October and another tiny hopper next year. And of course, the main spacecraft has a host of other tasks to accomplish during its stay at Ryugu -- most notably, to collect a sample of the primitive world to bring home to Earth for laboratory analysis. JAXA tweeted on Saturday: "We are sorry we have kept you waiting! MINERVA-II1 consists of two rovers, 1a & 1b. Both rovers are confirmed to have landed on the surface of Ryugu. They are in good condition and have transmitted photos & data. We also confirmed they are moving on the surface."

In a study published in Science Advances, researchers in Drexel's College of Engineering describe a method for spraying invisibly thin antennas, made from a type of two-dimensional, metallic material called MXene, that perform as well as those being used in mobile devices, wireless routers and portable transducers. Phys.Org reports: The researchers, from the College's Department of Materials Science and Engineering, report that the MXene titanium carbide can be dissolved in water to create an ink or paint. The exceptional conductivity of the material enables it to transmit and direct radio waves, even when it's applied in a very thin coating. Preserving transmission quality in a form this thin is significant because it would allow antennas to easily be embedded -- literally, sprayed on -- in a wide variety of objects and surfaces without adding additional weight or circuitry or requiring a certain level of rigidity.

Initial testing of the sprayed antennas suggest that they can perform with the same range of quality as current antennas, which are made from familiar metals, like gold, silver, copper and aluminum, but are much thicker than MXene antennas. Making antennas smaller and lighter has long been a goal of materials scientists and electrical engineers, so this discovery is a sizable step forward both in terms of reducing their footprint as well as broadening their application.

RockDoctor writes: An ad hoc committee of the International Astronomical Union has been working for 5 months on revisions and clarifications to the definitions of various terms used in technical and popular discussions of SETI -- the Search For Extraterrestrial Intelligence. They've published their draft report.

The terms of reference -- to account for existing popular and technical uses of the terms -- should mean that no major changes in usage occur, but interesting points do emerge from the discussion paper. For example, in discussing the term "extraterrestrial," their proposed definition ("shorthand for life or technology not originating recently on Earth") includes cover for possibilities such as "panspermia" which may be popular in "popular science," but certainly are not popular in the technical discussions. They go on to discuss that "by this definition, life on another planet with a common origin to Earth life but which diverged billions of years ago would be extraterrestrial, but Earth life accidentally brought to Mars on a human-built lander would not." Waiting for the invasion of the pedants, clutching their feet in their hands.

MIT has developed a new type of battery that could be made partly from carbon dioxide captured from power plants. "Rather than attempting to convert carbon dioxide to specialized chemicals using metal catalysts, which is currently highly challenging, this battery could continuously convert carbon dioxide into a solid mineral carbonate as it discharges," reports SciTechDaily. From the report: While still based on early-stage research and far from commercial deployment, the new battery formulation could open up new avenues for tailoring electrochemical carbon dioxide conversion reactions, which may ultimately help reduce the emission of the greenhouse gas to the atmosphere. The battery is made from lithium metal, carbon, and an electrolyte that the researchers designed. The findings are described today in the journal Joule, in a paper by assistant professor of mechanical engineering Betar Gallant, doctoral student Aliza Khurram, and postdoc Mingfu He. [...] Gallant and her co-workers, whose expertise has to do with nonaqueous (not water-based) electrochemical reactions such as those that underlie lithium-based batteries, looked into whether carbon-dioxide-capture chemistry could be put to use to make carbon-dioxide-loaded electrolytes -- one of the three essential parts of a battery -- where the captured gas could then be used during the discharge of the battery to provide a power output.

This approach is different from releasing the carbon dioxide back to the gas phase for long-term storage, as is now used in carbon capture and sequestration, or CCS. That field generally looks at ways of capturing carbon dioxide from a power plant through a chemical absorption process and then either storing it in underground formations or chemically altering it into a fuel or a chemical feedstock. Instead, this team developed a new approach that could potentially be used right in the power plant waste stream to make material for one of the main components of a battery. While interest has grown recently in the development of lithium-carbon-dioxide batteries, which use the gas as a reactant during discharge, the low reactivity of carbon dioxide has typically required the use of metal catalysts. Not only are these expensive, but their function remains poorly understood, and reactions are difficult to control. By incorporating the gas in a liquid state, however, Gallant and her co-workers found a way to achieve electrochemical carbon dioxide conversion using only a carbon electrode. The key is to preactivate the carbon dioxide by incorporating it into an amine solution. "What we've shown for the first time is that this technique activates the carbon dioxide for more facile electrochemistry," Gallant says. "These two chemistries -- aqueous amines and nonaqueous battery electrolytes -- are not normally used together, but we found that their combination imparts new and interesting behaviors that can increase the discharge voltage and allow for sustained conversion of carbon dioxide."

The approach reportedly works, producing a lithium-carbon dioxide battery with voltage and capacity that are competitive with that of state-of-the-art lithium-gas batteries," reports SciTechDaily. "Moreover, the amine acts as a molecular promoter that is not consumed in the reaction."

"The Surrey Space Center successfully used a net to capture a piece of artificial space junk in orbit for the first time in history on Sunday," writes Slashdot reader dmoberhaus. "The video was just released Wednesday and is quite stunning."

"Not only does the net look cool as hell, it's addressing a major problem for the future of space exploration," reports Motherboard: The test was carried about by the RemoveDEBRIS satellite, an experimental space debris removal platform built by an international consortium of space companies and university research centers. There are tens of thousands of pieces of fast-moving space junk in orbit, which range from the centimeter-scale all the way to entire rocket stages. Some of these pieces are moving faster than a bullet and all of them pose a serious danger to other satellites and crewed capsules... Removing this junk from orbit is particularly challenging because of the various sizes of the debris, its erratic tumbling motion, and the fact that some pieces are moving as fast as 30,000 miles per hour.
The successful experiment follows six years of Earth-based testing, according to a professor at the lead research institution, the Surrey Space Centre.

"While it might sound like a simple idea, the complexity of using a net in space to capture a piece of debris took many years of planning, engineering and coordination."

On Friday, Japan's Hayabusa2 spacecraft attempted to deploy two miniature rovers on an asteroid that it's been orbiting since mid-August. Ars Technica reports: Each weighed only about a kilogram, and after separating from the main spacecraft they approached the asteroid named Ryugu. Japanese mission scientists think the rovers touched down successfully, but are not completely sure. Communication with the two landers stopped near the moment of touchdown. This is presumably because Ryugu's rotation took the rovers out of view from the Hayabusa2 spacecraft, but scientists won't know for sure until later Friday (or Saturday morning, in Japan) when they attempt to download images from the rovers. And thus we are left with a suspenseful situation.

An anonymous reader quotes a report from CNN: Building walls on the seafloor could prevent glaciers from melting and sea levels rising due to global warming, scientists say. Barriers of sand and rock positioned at the base of glaciers would stop ice sheets sliding and collapsing, and prevent warm water from eroding the ice from beneath, according to research published this week in the Cryosphere journal, from the European Geosciences Union. The audacious idea centers on the construction of "extremely simple structures, merely piles of aggregate on the ocean floor, although more advanced structures could certainly be explored in the future," said the report's authors, Michael Wolovick, a researcher at the department of geosciences at Princeton University, and John Moore, professor of climate change at the University of Lapland in Finland.

Using computer models to gauge the probable impact of walls on erosion of the Thwaites glacier in Antarctica, one of the world's largest, Wolovick and Moore hoped to test the efficiency of "a locally targeted intervention." They claimed the simplest designs would allow direct comparison with existing engineering projects. "The easiest design that we considered would be comparable to the largest civil engineering projects that humanity has ever attempted," they said. "An ice sheet intervention today would be at the edge of human capabilities." For example, building four isolated walls would require between 0.1 and 1.5 cubic km of material. "That is comparable to the 0.1 km3 that was used to create Palm Jumeirah in Dubai ($12 billion)...(and) the 0.3 km3 that was used to create Hong Kong International Airport ($20 billion)," the report said. The authors say there's only a 30% probability of success due to the harsh environment, but did mention that the scientific community could work on a plan that was both achievable and had a high probability of success.

According to state monitoring data, Southern California violated federal smog standards for 87 consecutive days -- the longest stretch of bad air in at least 20 years. "The streak is the latest sign that Souther California's battle against smog is faltering after decades of dramatic improvement," reports San Francisco Chronicle. From the report: The ozone pollution spell began June 19 and continued through July and August, with every day exceeding the federal health standard of 70 parts per billion somewhere across Los Angeles, Orange, Riverside and San Bernardino counties. It didn't relent until Sept. 14, when air pollution dipped to "moderate" levels within federal limits for ozone, the lung-damaging gas in smog that triggers asthma and other respiratory illnesses. It's not unusual for Southern California summers to go weeks without a break in the smog, especially in inland communities that have long suffered the nation's worst ozone levels. But environmentalists and health experts say the persistence of dirty air this year is a troubling sign that demands action. Regulators blame the dip in air quality in recent years on hotter weather and stronger, more persistent inversion layers that trap smog near the ground.

A trial is underway to restore damaged coral on the Great Barrier Reef using electricity. From a report: The reef has been severely assaulted in recent years by cyclones and back-to-back heatwaves. Nathan Cook at conservation group Reef Ecologic and his colleagues are attempting to regrow surviving coral fragments on steel frames. The frames are placed on damaged parts of the reef and stimulated with electricity to accelerate the coral's growth. Electrified metal frames have previously been used to encourage coral growth on reefs in South-East Asia, the Caribbean and the Indian Ocean. They have been shown to attract mineral deposits that help corals grow 3 to 4 times faster than normal. The technique is being trialed at a section of the reef 100 kilometres north of Cairns that was badly affected by the 2016 and 2017 mass coral bleaching events. Some coral is starting to grow back naturally, but it will take at least a decade for even the fastest-growing species to fully recover.

An anonymous reader shares a report: Warmer weather conditions in western Greece have led to the eerie spectacle of a 300m-long spiderweb in Aitoliko. A vast area of greenery has been covered by the web, reports the Daily Hellas. Experts say it is a seasonal phenomenon, caused by Tetragnatha spiders, which can build large nests for mating. An increase in the mosquito population is also thought to have contributed to the rise in the number of spiders. Maria Chatzaki, professor of molecular biology and genetics at Democritus University of Thrace, Greece said high temperatures, sufficient humidity and food created the ideal conditions for the species to reproduce in large numbers. She told Newsit.gr: "It's as if the spiders are taking advantage of these conditions and are having a kind of a party. They mate, they reproduce and provide a whole new generation. "These spiders are not dangerous for humans and will not cause any damage to the area's flora. The spiders will have their party and will soon die."

An anonymous reader quotes a report from The Guardian: Microplastic can escape from polluted waters via flying insects, new research has revealed, contaminating new environments and threatening birds and other creatures that eat the insects. Scientists fed microplastics to mosquito larvae, which live in water, but found that the particles remained inside the animals as they transformed into flying adults. Other recent research found that half of the mayfly and caddisfly larvae in rivers in Wales contained microplastics. The new study, published in the journal Biology Letters, used Culex pipiens mosquitoes, as they are found across the world in many habitats. The researchers found the larvae readily consumed fluorescent microplastic particles that were 0.0002cm in size. The larvae matured into a non-feeding pupa stage and then emerged as adult mosquitoes, which still had significant microplastic within them. The researchers are now studying if this damages the mosquitoes. Professor Amanda Callaghan, at the University of Reading, UK, says it is "highly likely" that other flying insects that begin as water larvae will also eat and retain microplastics. Furthermore, animals that feed on insects, like birds, bats, and spiders, are likely also consuming microplastics.

Gul Dolen, a neuroscientist at the Johns Hopkins School of Medicine who studies how the cells and chemicals in animal brains influence animals' social lives, gave ecstasy to octopuses and recorded her observations. The study, published in the journal Current Biology, suggests that the psychoactive drug that can make people feel extra loving toward others also has the same effect on octopuses. An anonymous reader shares the report from The Atlantic: [Dolen] and her colleague Eric Edsinger put five Californian two-spot octopuses individually into the middle of three connected chambers and gave them free rein to explore. One of the adjacent chambers housed a second octopus, confined inside an overturned plastic basket. The other contained an unfamiliar object, such as a plastic flower or a Chewbacca figurine. Dolen and Edsinger measured how long the main animal spent in the company of its peer, and how long with the random toy. The free-moving individuals thoroughly explored the chambers, and from their movements, Dolen realized that individuals of any sex gravitate toward females, but avoid males. Next, she dosed the animals with ecstasy. Again, there's no precedent for this, but researchers often anesthetize octopuses by dunking them in ethanol -- a humane procedure with no lasting side effects. So Dolen and Edsinger submerged their octopuses in an MDMA solution, allowing them to absorb the drug through their gills. At first they used too high a dose, and the animals "freaked out and did all these color changes," Dolen says. But once the team found a more suitable dose, the animals behaved more calmly -- and more sociably. "With ecstasy in their system, the five octopuses spent far more time in the company of the same trapped male they once shunned," the report continues. "Even without a stopwatch, the change was obvious. Before the drug, they explored the chamber with the other octopus very tentatively."

"They mashed themselves against one wall, very slowly extended one arm, touched the [other animal], and went back to the other side," Dolen says. "But when they had MDMA, they had this very relaxed posture. They floated around, they wrapped their arms around the chamber, and they interacted with the other octopus in a much more fluid and generous way. They even exposed their [underside], where their mouth is, which is not something octopuses usually do."

Radio astronomers have so far cataloged fewer than 300 fast radio bursts, mysterious broadband radio signals that originate from well beyond the Milky Way. Almost a third of them -- 72, to be precise -- were not detected by astronomers at all but instead were recently discovered by an artificial intelligence (AI) program trained to spot their telltale signals, even hidden underneath noisy background data. The very first recorded fast radio burst, or FRB, was spotted by radio astronomers in 2007, nestled in data from 2001, reads a report on IEEE Spectrum. Today, algorithms spot FRBs by sifting through massive amounts of data as it comes in. However, today's best algorithms still can't detect every FRB that reaches Earth. That's why AI developed by Breakthrough Listen, a SETI project headed by the University of California, Berkeley, which has already found dozens of new bursts in its trial run, will be a big help in future searches. The report adds: There are a few theories about what FRBs (fast radio bursts) might be. The prevailing theory is that they're created by rapidly rotating neutron stars. In other theories, they emanate from supermassive black holes. Even more out-there theories describe how they're produced when neutron stars collide with stars composed of hypothetical dark matter particles called axions. The bursts are probably not sent by aliens, but that theory has its supporters, too. What we do know is that FRBs come from deep space and each burst lasts for only a few milliseconds. Traditionally, algorithms tease them out of the data by identifying the quadratic signals associated with FRBs. But these signals are coming from far-flung galaxies. "Because these pulses travel so far, there are plenty of complications en route," says Zhang. Pulses can be distorted and warped along the way. And even when one reaches Earth, our own noisy planet can obfuscate a pulse. That's why it makes sense to train an AI -- specifically, a convolutional neural network -- to poke through the data and find the ones that traditional algorithms missed. "In radio astronomy," says Zhang, "at least nowadays, it's characterized by big data." Case in point: The 72 FRBs identified by the Berkeley team's AI were found in 8 terabytes of data gathered by the Green Bank Telescope in West Virginia. To even give the AI enough information to learn how to spot those signals in the first place, Zhang says the team generated about 100,000 fake FRB pulses. The simple quadratic structure of FRBs makes it fairly easy to construct fake pulses for training, according to Zhang. Then, they disguised these signals among the Green Bank Telescope data. As the team explains in their paper [PDF], accepted by The Astrophysical Journal with a preprint available on arXiv, it took 20 hours to train the AI with those fake pulses using a Nvidia Titan Xp GPU. By the end, the AI could detect 88 percent of the fake test signals. Furthermore, 98 percent of the identifications that the AI made were actually planted signals, as opposed to the machine mistakenly identifying background noise as an FRB pulse.

Two mathematicians have found what they say is a hole at the heart of a proof that has convulsed the mathematics community for nearly six years. Quanta Magazine: In a report [PDF] posted online Thursday, Peter Scholze of the University of Bonn and Jakob Stix of Goethe University Frankfurt describe what Stix calls a "serious, unfixable gap" within a mammoth series of papers by Shinichi Mochizuki, a mathematician at Kyoto University who is renowned for his brilliance. Posted online in 2012, Mochizuki's papers supposedly prove the abc conjecture, one of the most far-reaching problems in number theory. Despite multiple conferences dedicated to explicating Mochizuki's proof, number theorists have struggled to come to grips with its underlying ideas. His series of papers, which total more than 500 pages, are written in an impenetrable style, and refer back to a further 500 pages or so of previous work by Mochizuki, creating what one mathematician, Brian Conrad of Stanford University, has called "a sense of infinite regress."

Between 12 and 18 mathematicians who have studied the proof in depth believe it is correct, wrote Ivan Fesenko of the University of Nottingham in an email. But only mathematicians in "Mochizuki's orbit" have vouched for the proof's correctness, Conrad commented in a blog discussion last December. "There is nobody else out there who has been willing to say even off the record that they are confident the proof is complete." Nevertheless, wrote Frank Calegari of the University of Chicago in a December blog post, "mathematicians are very loath to claim that there is a problem with Mochizuki's argument because they can't point to any definitive error." That has now changed. In their report, Scholze and Stix argue that a line of reasoning near the end of the proof of "Corollary 3.12" in Mochizuki's third of four papers is fundamentally flawed. The corollary is central to Mochizuki's proposed abc proof. "I think the abc conjecture is still open," Scholze said. "Anybody has a chance of proving it."

In a wonderful example of truth validating fiction, the star system imagined as the location of Vulcan, Spock's home world in Star Trek, has a planet orbiting it in real life. From a report: A team of scientists spotted the exoplanet, which is about twice the size of Earth, as part of the Dharma Planet Survey (DPS), led by University of Florida astronomer Jian Ge. It orbits HD 26965, more popularly known as 40 Eridani, a triple star system 16 light years away from the Sun. Made up of a Sun-scale orange dwarf (Eridani A), a white dwarf (Eridani B), and a red dwarf (Eridani C), this system was selected to be "Vulcan's Sun" after Star Trek creator Gene Roddenberry consulted with astronomers Sallie Baliunas, Robert Donahue, and George Nassiopoulos about the best location for the fictional planet.

"An intelligent civilization could have evolved over the aeons on a planet circling 40 Eridani," Roddenberry and the astronomers suggested in a 1991 letter to the editor published in Sky & Telescope. The three stars "would gleam brilliantly in the Vulcan sky," they added. The real-life exoplanet, known as HD 26965b, is especially tantalizing because it orbits just within the habitable zone of its star, meaning that it is theoretically possible that liquid water -- the key ingredient for life as we know it -- could exist on its surface.

Zorro shares a report from Study Finds: [...] A new study shows we may just have to chalk it up to our brains simply being hardwired to prefer hanging on the couch instead of the chin-up bar. Researchers from the University of British Columbia and University of Geneva sought to better understand the brain chemistry behind what they refer to as the "exercise paradox." This happens when people pledge to engage in regular physical fitness, but instead find themselves becoming less active. "Conserving energy has been essential for humans' survival, as it allowed us to be more efficient in searching for food and shelter, competing for sexual partners, and avoiding predators," explains Matthew Boisgontier, a postdoctoral researcher in UBC's brain behavior lab at the department of physical therapy, and senior author of the study, in a UBC release.

So Boisgontier and his co-authors recruited 29 young adults who wanted to improve the level of exercise in their lives to take part in a computerized test. The test required them to move a human figure on the screen either towards images of physical activities or away from images of sedentary activities that would randomly appear, and then again vice versa. Participants were hooked up to an electroencephalograph to monitor their brain activity during the exercise. The results showed that participants tended to move towards the active images or away from the sedentary ones at the fastest rates. "We found that participants took 32 milliseconds less to move away from the sedentary image, which is considerable for a task like this," says study co-author Boris Cheval, of the University of Geneva, in a university release, adding that this finding went against the so-called exercise paradox.

In a multi-'cat' experiment, the textbook interpretation of quantum theory seems to lead to contradictory pictures of reality, physicists claim. New submitter Lanodonal shares a report: In the world's most famous thought experiment, physicist Erwin Schrodinger described how a cat in a box could be in an uncertain predicament. The peculiar rules of quantum theory meant that it could be both dead and alive, until the box was opened and the cat's state measured. Now, two physicists have devised a modern version of the paradox by replacing the cat with a physicist doing experiments -- with shocking implications.

Quantum theory has a long history of thought experiments, and in most cases these are used to point to weaknesses in various interpretations of quantum mechanics. But the latest version, which involves multiple players, is unusual: it shows that if the standard interpretation of quantum mechanics is correct, then different experimenters can reach opposite conclusions about what the physicist in the box has measured. This means that quantum theory contradicts itself.

The conceptual experiment has been debated with gusto in physics circles for more than two years -- and has left most researchers stumped, even in a field accustomed to weird concepts. "I think this is a whole new level of weirdness," says Matthew Leifer, a theoretical physicist at Chapman University in Orange, California. The authors, Daniela Frauchiger and Renato Renner of the Swiss Federal Institute of Technology (ETH) in Zurich, posted their first version of the argument online in April 2016. The final paper [PDF] appears in Nature Communications on 18 September.

An anonymous reader quotes a report from Ars Technica: A new study has sifted through some of the largest online data sets of personality quizzes and identified four distinct "types" therein. The new methodology used for this study -- described in detail in a new paper in Nature Human Behavior -- is rigorous and replicable, which could help move personality typing analysis out of the dubious self-help section in your local bookstore and into serious scientific journals. What's new here is the identification of four dominant clusters in the overall distribution of traits. [Paper co-author William Revelle (Northwestern University)] prefers to think of them as "lumps in the batter" and suggests that a good analogy would be how people tend to concentrate in cities in the United States. The Northwestern researchers used publicly available data from online quizzes taken by 1.5 million people around the world. That data was then plotted in accordance with the so-called Big Five basic personality traits: neuroticism, extraversion, openness, agreeableness, and conscientiousness. The Big Five is currently the professional standard for social psychologists who study personality. (Here's a good summary of what each of those traits means to psychologists.) They then applied their algorithms to the resulting dataset. Here are the four distinct personality clusters that the researchers ended up with:

Average: These people score high in neuroticism and extraversion, but score low in openness. It is the most typical category, with women being more likely than men to fit into it.
Reserved: This type of person is stable emotionally without being especially open or neurotic. They tend to score lower on extraversion but tend to be somewhat agreeable and conscientious.
Role Models: These people score high in every trait except neuroticism, and the likelihood that someone fits into this category increases dramatically as they age. "These are people who are dependable and open to new ideas," says Amaral. "These are good people to be in charge of things." Women are more likely than men to be role models.
Self-Centered: These people score very high in extraversion, but score low in openness, agreeableness, and conscientiousness. Most teenage boys would fall into this category, according to Revelle, before (hopefully) maturing out of it. The number of people who fall into this category decreases dramatically with age.

SpaceX CEO Elon Musk revealed on Monday the identity of the passenger signed to visit the moon, set to launch on the company's Big Falcon Rocket (BFR) vehicle: Japanese billionaire Yusaku Maezawa. Mr. Maezawa, 42, is the founder of Japan's Start Today, which operates largest online clothing retailer site in the country Zozotown and Wear. The Verge adds: Maezawa, who is 42, reportedly has a real time net worth of $2.9 billion, according to Forbes. He is also an avid art collector, and spent $110.5 million on a 1982 painting by Jean-Michel Basquiat called "Untitled" last year. "Finally, I can tell you that I choose to go to the Moon!" Maezawa said at a SpaceX event, announcing his trip. This isn't the first time that SpaceX has announced it plans to send a paying customer to the Moon on one of its vehicles. In February 2017, Musk proclaimed that two individuals had each put down a "significant deposit" to fly around the Moon on SpaceX's Falcon Heavy rocket, a larger version of the Falcon 9. No details about the passengers were given, though Musk said it was "nobody from Hollywood." The flight was slated to occur before the end of this year. "Ever since I was a kid, I have loved the moon," Maezawa said in a website that his team and SpaceX created for this expedition. "This is a project that I designed and made: #dearMoon," He added, noting that it will be launched in 2023. "I choose to go to the moon with artists. In 2023, as the host, I would like to invite 6 to 8 artists from around the world to join me on this mission to the Moon." He said going to the moon can contribute to "world peace."

Mr. Musk said SpaceX's first orbital flight could be in 2-3 years, and then it would test flights without a passenger around the moon. He added, however, that as far as the proposed 2023 deadline is concerned to get the first paying passenger on the moon, he is "definitely not sure about it," as there could be some delays because of the uncertainties and complexities.

An anonymous reader shares a report: At 10:00 p.m. on May 5, a team of people quietly approached a leatherback lying in the sand on the Florida beach. Working quickly while the female sea turtle laid her eggs, they drilled two small holes in the back of her shell. Through the holes they threaded zip ties, affixing a small transmitter with epoxy on the back for added security.

Over the next few months, members of the non-profit, Florida Leatherbacks, Inc, watched as Isla the sea turtle visited the beach a few more time to lay new clutches of fragile eggs in the sand, before starting her late summer migration north along the East Coast. "We're monitoring where she is right now, and it just happens to be in the middle of a hurricane," Kelly Martin says. Isla is now off the Outer Banks of North Carolina, to the north of where Hurricane Florence made landfall late last week. For a while it seemed like she would get caught in the massive storm as it slid past the coast. She wound up north of the worst of it, but still experienced rough seas over the weekend. Even before the hurricane hit, she surfaced in an area where waves reached 14 feet high.

"Turtles are air breathers, so they need to come to the surface periodically to breathe, but I suspect many dive below the surface to weather the storms," Kate Mansfield, director of the Marine Turtle Research Group at the University of Central Florida, says in an email. "I have tracked turtles through some storms in the past and never saw any sort of movement that suggested they were trying to get away from the storm (or that the storms shifted their paths). The turtles I tracked were larger juveniles -- at that size they can dive 100s of meters deep."