We are sorry to see you leave - Beta is different and we value the time you took to try it out. Before you decide to go, please take a look at some value-adds for Beta and learn more about it. Thank you for reading Slashdot, and for making the site better!
Zothecula writes A Glasgow-based startup is reducing the cost of access to space by offering "satellite kits" that make it easier for space enthusiasts, high schools and universities alike to build a small but functional satellite for as little as US$6,000 and then, thanks to its very small size, to launch for significantly less than the popular CubeSats.
0 comments | 11 minutes ago
Rambo Tribble writes It was long thought that gamma ray bursts were the exclusive province of deep space sources. More recently it was found that storms could produce such emissions, but such occurrences were thought rare. Now, data from NASA's Fermi satellite suggest such events happen over a thousand times a day. Per Prof. Joseph Dwyer, from the University of New Hampshire, "These are big, monster bursts of gamma rays, and one would think these must be monster storms producing them. But that's not the case. Even boring-looking, garden-variety, little storms can produce these."
24 comments | 5 hours ago
ErnieKey writes A major application of 3d printing that could revolutionize space travel would be using 3d printers to create structures on non-terrestrial bodies like the moon, other planets, and even asteroids. Researchers from NASA's Kennedy Space Center have been working to develop solutions to materials issues, and recently presented initial findings on the potential for using in-situ materials like basalt for 3D printing. Their innovative method is based on only using in-situ supplies, and not materials that need to be brought into space.
43 comments | 13 hours ago
An anonymous reader writes: IEEE Spectrum reports on a study out of NASA exploring the idea that manned missions to Venus are possible if astronauts deploy and live in airships once they arrive. Since the atmospheric pressure at the surface is 92 times that of Earth, and the surface temperate is over 450 degrees C, the probes we've sent to Venus haven't lasted long. The Venera 8 probe sent back data for only 50 minutes after landing. Soviet missions in 1985 were able to get much more data — 46 hours worth — by suspending their probes from balloons. The new study refines that concept: "At 50 kilometers above its surface, Venus offers one atmosphere of pressure and only slightly lower gravity than Earth. Mars, in comparison, has a "sea level" atmospheric pressure of less than a hundredth of Earth's, and gravity just over a third Earth normal. The temperature at 50 km on Venus is around 75 C, which is a mere 17 degrees hotter than the highest temperature recorded on Earth.
The defining feature of these missions is the vehicle that will be doing the atmospheric exploring: a helium-filled, solar-powered airship. The robotic version would be 31 meters long (about half the size of the Goodyear blimp), while the crewed version would be nearly 130 meters long, or twice the size of a Boeing 747. The top of the airship would be covered with more than 1,000 square meters of solar panels, with a gondola slung underneath for instruments and, in the crewed version, a small habitat and the ascent vehicle that the astronauts would use to return to Venus's orbit, and home."
183 comments | yesterday
An anonymous reader writes: SpaceX has announced that at the conclusion of its next rocket flight, it will attempt a precision landing of its Falcon 9 first stage onto an autonomous ocean platform. They say the odds of success aren't great, but it's the beginning of their work to make this a reality. Quoting: "At 14 stories tall and traveling upwards of 1300 m/s (nearly 1 mi/s), stabilizing the Falcon 9 first stage for reentry is like trying to balance a rubber broomstick on your hand in the middle of a wind storm. To help stabilize the stage and to reduce its speed, SpaceX relights the engines for a series of three burns.
The first burn—the boostback burn—adjusts the impact point of the vehicle and is followed by the supersonic retro propulsion burn that, along with the drag of the atmosphere, slows the vehicle's speed from 1300 m/s to about 250 m/s. The final burn is the landing burn, during which the legs deploy and the vehicle's speed is further reduced to around 2 m/s. ... To complicate matters further, the landing site is limited in size and not entirely stationary. The autonomous spaceport drone ship is 300 by 100 feet, with wings that extend its width to 170 feet. While that may sound huge at first, to a Falcon 9 first stage coming from space, it seems very small. The legspan of the Falcon 9 first stage is about 70 feet and while the ship is equipped with powerful thrusters to help it stay in place, it is not actually anchored, so finding the bullseye becomes particularly tricky."
79 comments | yesterday
sciencehabit writes: It's springtime on Titan, Saturn's giant and frigid moon, and the action on its hydrocarbon seas seems to be heating up. Near the moon's north pole, there is growing evidence for waves on three different seas, scientists reported at a meeting of the American Geophysical Union. Researchers are also coming up with the first estimates for the volume and composition of the seas. The bodies of water appear to be made mostly of methane, and not mostly ethane as previously thought. And they are deep: Ligeia Mare, the second biggest sea with an area larger than Lake Superior, could contain 55 times Earth's oil reserves.
81 comments | yesterday
Jason Koebler writes: Tucows Inc., an internet company that's been around since the early 90s — it's generally known for being in the shareware business and for registering and selling premium domain names — announced that it's becoming an internet service provider. Tucows will offer fiber internet to customers in Charlottesville, Virginia — which is served by Comcast and CenturyLink — in early 2015 and eventually wants to expand to other markets all over the country. "Everyone who has built a well-run gigabit network has had demand exceeding their expectations," Elliot Noss, Tucows' CEO said. "We think there's space in the market for businesses like us and smaller."
64 comments | yesterday
astroengine writes: A gas strongly associated with life on Earth has been detected again in the Martian atmosphere, opening a new chapter in a decade-old mystery about the on-again, off-again appearance of methane on Mars. The latest discovery comes from NASA's Curiosity rover, which in addition to analyzing rocks and soil samples, is sniffing the air at its Gale Crater landing site. A year ago, scientists reported that Curiosity had come up empty-handed after an eight-month search for methane in the atmosphere, leaving earlier detections by ground-based telescopes and Mars-orbiting spacecraft an unexplained anomaly. "We thought we had closed the book on methane. It was disappointing to a lot of people that there wasn't significant methane on Mars, but that's where we were," Curiosity scientist Christopher Webster with NASA's Jet Propulsion Laboratory in Pasadena, Calif., told Discovery News.
66 comments | yesterday
An anonymous reader writes: I graduated with a degree in the liberal arts (English) in 2010 after having transferred from a Microbiology program (not for lack of ability, but for an enlightening class wherein we read Portrait of the Artist). Now, a couple years on, I'm 25, and though I very much appreciate my education for having taught me a great deal about abstraction, critical thinking, research, communication, and cheesily enough, humanity, I realize that I should have stuck with the STEM field. I've found that the jobs available to me are not exactly up my alley, and that I can better impact the world, and make myself happier, doing something STEM-related (preferably within the space industry — so not really something that's easy to just jump into). With a decent amount of student debt already amassed, how can I best break into the STEM world? I'm already taking online courses where I can, and enjoy doing entry-level programming, maths, etc.
Should I continue picking things up where and when I can? Would it be wiser for me to go deeper into debt and get a second undergrad degree? Or should I try to go into grad school after doing some of my own studying up? Would the military be a better choice? Would it behoove me to just start trying to find STEM jobs and learn on the go (I know many times experience speaks louder to employers than a college degree might)? Or perhaps I should find a non-STEM job with a company that would allow me to transfer into that company's STEM work? I'd be particularly interested in hearing from people who have been in my position and from employers who have experience with employees who were in my position, but any insight would be welcome.
262 comments | yesterday
An anonymous reader writes: In a scathing indictment of NASA's bureaucracy, the Washington Post documents a $349 million project to construct a laboratory tower that was closed as soon as it was finished. From the article: "[The tower was] designed to test a new rocket engine in a chamber that mimicked the vacuum of space. ... As soon as the work was done, it shut the tower down. The project was officially 'mothballed' — closed up and left empty — without ever being used. ... The reason for the shutdown: The new tower — called the A-3 test stand — was useless. Just as expected. The rocket program it was designed for had been canceled in 2010. ... The result was that NASA spent four more years building something it didn't need. Now, the agency will spend about $700,000 a year to maintain it in disuse. ... Jerked from one mission to another, NASA lost its sense that any mission was truly urgent. It began to absorb the vices of less-glamorous bureaucracies: Officials tended to let projects run over time and budget. Its congressional overseers tended to view NASA first as a means to deliver pork back home, and second as a means to deliver Americans into space. In Mississippi, NASA built a monument to its own institutional drift."
186 comments | 2 days ago
sciencehabit writes: After the Mars Reconnaissance Orbiter began beaming back close-up images of the Red Planet, researchers spotted peculiar features along the slopes of dunes: long, sharply defined grooves that seem to appear and disappear seasonally. They look like trails left behind by tumbling boulders, but rocks never appear in the sunken pits at the trail ends. Researchers initially took these gullies as signs of flowing liquid water, but a new model suggests they're the result of sand-surfing dry ice that breaks off from the crests of dunes and skids down slopes. This is no ordinary tumble — according to the model, the bases of the chunks are continually sublimating, resulting in a hovercraftlike motion that gouges the dune while propelling the ice down slopes.
26 comments | 2 days ago
samzenpus (5) writes "Jonty Hurwitz is an artist with a degree in engineering who says each one of his pieces is "a study on the physics of how we perceive space and is the stroke of over 1 billion calculations and algorithms." Recently, his nano sculpture project drew a lot of attention. With help from the Weizmann Institute of Science and using a 3D printing technique by the Institute of Microstructure Technology at the Karlsruhe Institute of Technology, Hurwitz created a number of sculptures that were so small they could fit in the eye of a needle, or on a human hair. Jonty has agreed to answer any questions you have big or very small. As usual, ask as many as you'd like, but please, one per post."
30 comments | 2 days ago
An anonymous reader writes with news that Sir Richard Branson's goal of diving to the deepest part of the ocean has been put on indefinite hold. "Sir Richard Branson has quietly shelved his latest adventure: an ambitious plan to pilot a submarine to the deepest points of the world's five oceans. The entrepreneur had a grand scheme to explore both space and sea. But his plan for the first rocket ship charging passengers for trips to the edge of space is in jeopardy after the craft crashed during a test flight, killing a pilot. Now Sir Richard's dream of exploring the lowest points on Earth is also on hold. Virgin Oceanic's DeepFlight Challenger submarine was unveiled in a blaze of publicity in April 2011, with Sir Richard describing its mission as 'the last great challenge for humans.' He had hoped the 18ft-long submarine, designed to 'fly' along the ocean floor, would make its maiden voyage to the bottom of the Pacific's Mariana Trench – at a depth of 36,000ft, the lowest known point on Earth – by the end of 2011, or failing that, by 2012."
47 comments | 2 days ago
littlesparkvt writes The SpaceX manufacturing plant in McGregor, TX is set to spend $46 million on an expansion that would create 300 full-time jobs. SpaceX is proposing to invest $46.3 million in the site during the next five years. They will spend $32.4 million in real property improvements and $13.9 million in personal property improvements.
43 comments | 2 days ago
mikejuk (1801200) writes "When British astronaut Tim Peake heads off to the International Space Station in November, 2015, he will be accompanied on his 6-month mission by two augmented Raspberry Pis, aka Astro Pis. The Astro Pi board is a Raspberry Pi HAT (short for Hardware Attached on Top), and provides a gyroscope, accelerometer, and magnetometer, as well as sensors for temperature, barometric pressure, and humidity. It also has a real time clock, LED display, and some push buttons — it sounds like the sort of addon that we could do with down here on earth as well! It will also be equipped with both a camera module and an infra-red camera. UK school pupils are being challenged to write Raspberry Pi apps or experiments to run in space. During his mission, Tim Peake will deploy the Astro Pis, upload the winning code while in orbit, set them running, collect the data generated and then download it to be distributed to the winning teams.
56 comments | 3 days ago
schwit1 (797399) writes A French lawmaker lashed out at Airbus for daring to consider SpaceX as a possible launch option for a European communications satellite. "The senator, Alain Gournac, who is a veteran member of the French Parliamentary Space Group, said he had written French Economy and Industry Minister Emmanuel Macron to protest Airbus' negotiations with Hawthorne, California-based Space Exploration Technologies Corp. for a late 2016 launch instead of contracting for a launch on a European Ariane 5 rocket. "The negotiations are all the more unacceptable given that, at the insistence of France, Europe has decided to adopt a policy of 'European preference' for its government launches," Gournac said. "This is called playing against your team, and it smacks of a provocation. It's an incredible situation that might lead customers to think we no longer have faith in Ariane 5 — and tomorrow, Ariane 6."
166 comments | 4 days ago
Yesterday, we posted news that data from the European Space Agency's XMM-Newton spacecraft had been interpreted as a possible sign of dark matter; researchers noted that a spike in X-ray emissions from two different celestial objects, the Andromeda galaxy and the Perseus galaxy cluster, matched just what they "were expecting with dark matter — that is, concentrated and intense in the center of objects and weaker and diffuse on the edges." StartsWithABang writes with a skeptical rejoinder: There seems to be a formula for this very specific extraordinary claim: point your high-energy telescope at the center of a galaxy or cluster of galaxies, discover an X-ray or gamma ray signal that you can't account for through conventional, known astrophysics, and claim you've detected dark matter! Only, these results never pan out; they've turned out either to be due to conventional sources or simply non-detections every time. There's a claim going around the news based on this paper recently that we've really done it this time, and yet that's not even physically possible, as our astrophysical constraints already rule out a particle with this property as being the dark matter!
83 comments | 5 days ago
TaleSlinger sends this news from Space.com:
Astronomers may finally have detected a signal of dark matter, the mysterious and elusive stuff thought to make up most of the material universe. While poring over data collected by the European Space Agency's XMM-Newton spacecraft, a team of researchers spotted an odd spike in X-ray emissions coming from two different celestial objects — the Andromeda galaxy and the Perseus galaxy cluster.
"The signal's distribution within the galaxy corresponds exactly to what we were expecting with dark matter — that is, concentrated and intense in the center of objects and weaker and diffuse on the edges," [assuming that dark matter consists of sterile neutrinos] study co-author Oleg Ruchayskiy, of the École Polytechnique Fédérale de Lausanne (EPFL) in Switzerland, said in a statement. "With the goal of verifying our findings, we then looked at data from our own galaxy, the Milky Way, and made the same observations," added lead author Alexey Boyarsky, of EPFL and Leiden University in the Netherlands. The decay of sterile neutrinos is thought to produce X-rays, so the research team suspects these may be the dark matter particles responsible for the mysterious signal coming from Andromeda and the Perseus cluster."
65 comments | 5 days ago
An anonymous reader writes with findings from the Rosetta mission which suggests water on Earth probably came from asteroids, and not comets."Scientists have dealt a blow to the theory that most water on Earth came from comets. Results from Europe's Rosetta mission, which made history by landing on Comet 67P in November, shows the water on the icy mass is unlike that on our planet. The results are published in the journal Science. The authors conclude it is more likely that the water came from asteroids, but other scientists say more data is needed before comets can be ruled out."
135 comments | about a week ago
StartsWithABang writes: Most meteor showers originate from comets well out beyond Neptune, only entering the inner Solar System periodically. In those cases, we have to wait long periods of time for the showers to develop, and suffer many years with paltry displays as we pass through the parts of the comet's orbit thin in particles. But the Geminids are special: they're formed from a short-period asteroid and only began in the mid-19th century. Ever since then they've been intensifying, and conditions are right this year for the most spectacular display of all time. Here's how to catch 2014's greatest meteor shower, including where to look, when, and where to go online in case of clouds.
24 comments | about a week ago