Earth

Ask Slashdot: What Happens If We Perfect Age Reversing? 327

Posted by samzenpus
from the mad-max-time dept.
ourlovecanlastforeve writes: With biologists getting closer and closer to reversing the aging process in human cells, the reality of greatly extended life draws closer. This brings up a very important conundrum: You can't tell people not to reproduce and you can't kill people to preserve resources and space. Even at our current growth rate there's not enough for everyone. Not enough food, not enough space, not enough medical care. If — no, when — age reversal becomes a reality, who gets to live? And if everyone gets to live, how will we provide for them?
Space

Neil DeGrasse Tyson Urges America To Challenge China To a Space Race 237

Posted by timothy
from the autocorrect-says-neil-degrease-tyson dept.
An anonymous reader writes: According to a Tuesday story in the UK edition of the International Business Times, Neil deGrasse Tyson, the celebrity astrophysicist and media personality, advocates a space race between the United States and China. The idea is that such a race would spur innovation and cause industry to grow. The Apollo race to the moon caused a similar explosive period of scientific research and engineering development. You might prefer the Sydney Morning Herald piece on which the IB Times article is based.
Space

Black Hole Plays Pool With Plasma 41

Posted by timothy
from the always-bet-on-the-black-hole dept.
the monolith writes: The Hubble Space Telescope is revealing that there is a pool game in progress, with a long shot being played out on a cosmic scale. It appears that the first recorded shot was observed in 1992, while subsequent canon shots were recorded between 1994 an 2014. In actuality, the shots are plasma, the current player is a black hole, and the playing surface is galactic space itself. The BBC has a story on the observations and interpretations, while the journal Nature has the paywalled in-depth article. The current score is unknown, and one can only hope that there were no life forms involved in the collision.
Science

Ways To Travel Faster Than Light Without Violating Relativity 206

Posted by samzenpus
from the greased-lightning dept.
StartsWithABang writes: It's one of the cardinal laws of physics and the underlying principle of Einstein's relativity itself: the fact that there's a universal speed limit to the motion of anything through space and time, the speed of light, or c. Light itself will always move at this speed (as well as certain other phenomena, like the force of gravity), while anything with mass — like all known particles of matter and antimatter — will always move slower than that. But if you want something to travel faster-than-light, you aren't, as you might think, relegated to the realm of science fiction. There are real, physical phenomena that do exactly this, and yet are perfectly consistent with relativity.
Space

SpaceX Cleared For US Military Launches 61

Posted by Soulskill
from the low-earth-orbit-needs-more-lasers dept.
An anonymous reader writes: The U.S. Air Force has given private rocket company SpaceX clearance to launch military satellites into orbit. This disrupts the lock that Boeing and Lockheed Martin have had on military launches for almost a decade. SpaceX will get its first opportunity to bid for such launches in June, when the Air Force posts a contract to launch GPS satellites.
Mars

How To Die On Mars 272

Posted by Soulskill
from the get-your-coffin-to-mars dept.
An anonymous reader writes: Many space-related projects are currently focusing on Mars. SpaceX wants to build a colony there, NASA is looking into base design, and Mars One is supposedly picking astronauts for a mission. Because of this, we've been reading a lot about how we could live on Mars. An article at Popular Science reminds us of all the easy ways to die there. "Barring any complications with the spacecraft's hardware or any unintended run-ins with space debris, there's still a big killer lurking out in space that can't be easily avoided: radiation. ... [And] with so little atmosphere surrounding Mars, gently landing a large amount of weight on the planet will be tough. Heavy objects will pick up too much speed during the descent, making for one deep impact. ... Mars One's plan is to grow crops indoors under artificial lighting. According to the project's website, 80 square meters of space will be dedicated to plant growth within the habitat; the vegetation will be sustained using suspected water in Mars' soil, as well as carbon dioxide produced by the initial four-member crew. However, analysis conducted by MIT researchers last year (PDF) shows that those numbers just don't add up."
Government

Russian Space Agency Misused $1.8 Billion, May Be Replaced 94

Posted by Soulskill
from the that's-a-lot-of-vodka dept.
An anonymous reader writes: After a pair of high profile launch failures in the past few months, Russian space agency Roscosmos is making headlines again: this time for corruption. A public spending watchdog reported that the organization had misused 92 billion rubles ($1.8 billion) in 2014 alone. Deputy Prime Minister Dmitry Rogozin said their space efforts have been undermined by rampant corruption. "We have uncovered acts of fraud, abuse of authority (and) document forgery. With such a level of moral decay, one should not be surprised at the high accident rate." He also said Roscosmos is to be "abolished," and replaced by a state corporation of the same name by the end of the year. "In its new, corporate identity, Roscosmos will be responsible not only for setting mission goals but managing wages for space industry workers and modernizing production facilities."
Space

Largest Eruption In the Known Universe Is ~100 Times the Size of Milky Way 73

Posted by samzenpus
from the big-boom dept.
StartsWithABang writes: At the center of almost every galaxy is a supermassive black hole (SMBH); at the center of almost every cluster is a supermassive galaxy with some of the largest SMBHs in the Universe. And every once in a while, a galactocentric black hole will become active, emitting tremendous amounts of radiation out into the Universe as it devours matter. This radiation can cut across the spectrum, from the X-ray down to the radio. At the heart of MS 0735.6+7421, there's a >10^10 solar mass black hole that appears to have been active for hundreds of millions of years, something unheard of!
NASA

Hubble Discovers a Fast-Aging Star Nicknamed "Nasty 1" 29

Posted by samzenpus
from the vanity-plate-ideas dept.
An anonymous reader writes: Using NASA's Hubble Space Telescope, Astronomers have uncovered surprising new clues about a large, rapidly aging star whose behavior has never been seen before. The star is so strange in fact that astronomers have nicknamed it "Nasty 1," a play on its catalog name of NaSt1. Wolf-Rayet stars like NaSt1 are typically large, rapidly evolving stellar bodies that form by shedding their hydrogen-filled outer layers quickly, exposing a bright hot, helium-burning core. Nasty 1 is unique because it contains a disk like structure. "We were excited to see this disk-like structure because it may be evidence for a Wolf-Rayet star forming from a binary interaction," said Jon Mauerhan of UC Berkeley, lead author on the new Nasty 1 paper. "There are very few examples in the galaxy of this process in action because this phase is short-lived, perhaps lasting only a hundred thousand years, while the timescale over which a resulting disk is visible could be only ten thousand years or less."
Moon

India Ends Russian Space Partnership and Will Land On the Moon Alone 118

Posted by samzenpus
from the all-by-myself dept.
An anonymous reader writes: The Russian space program has experienced numerous accidents and delays recently, leading Indian officials to call into question its long term viability. Now India has decided to pull out of a partnership with Russia for a mission to the moon. According to the Examiner: "Previously, India was scheduled to launch a Russian lander on one of its rockets and send it to the lunar South Pole. Now, according to a story in Russia and India Report, India will go it alone, building its own lander to touch down on the lunar surface within the next few years.
Space

Universe's Dark Ages May Not Be Invisible After All 55

Posted by Soulskill
from the if-you-have-a-big-enough-flashlight dept.
StartsWithABang writes: The Universe had two periods where light was abundant, separated by the cosmic dark ages. The first came at the moment of the hot Big Bang, as the Universe was flooded with (among the matter, antimatter and everything else imaginable) a sea of high-energy photons, including a large amount of visible light. As the Universe expanded and cooled, eventually the cosmic microwave background was emitted, leaving behind the barely visible, cooling photons. It took between 50 and 100 million years for the first stars to turn on, so in between these two epochs of the Universe being flooded with light, we had the dark ages. Yet the dark ages may not be totally invisible, as the forbidden spin-flip-transition of hydrogen may illuminate this time period after all.
The Media

Death In the Browser Tab 96

Posted by Soulskill
from the not-about-chrome's-memory-management dept.
theodp writes: "There you are watching another death on video," writes the NY Times' Teju Cole. "In the course of ordinary life — at lunch or in bed, in a car or in the park — you are suddenly plunged into someone else's crisis, someone else's horror. It arrives, absurdly, in the midst of banal things. That is how, late one afternoon in April, I watched Walter Scott die. The footage of his death, taken by a passer-by, had just been published online on the front page of The New York Times. I watched it, sitting at my desk in Brooklyn, and was stunned by it." Cole continues, "For most of human history, to see someone die, you had to be there. Depictions of death, if there were any, came later, at a certain remove of time and space." Disturbing as they may be (Cole notes he couldn't bear to watch the ISIS beheading videos), such images may ultimately change things for the better. Is it better to publish them than sweep them under the carpet?
Space

Asteroid Risk Greatly Overestimated By Almost Everyone 234

Posted by Soulskill
from the but-my-asteroid-insurance-business-is-thriving dept.
StartsWithABang writes: When it comes to risk assessment, there's one type that humans are notoriously bad at: the very low-frequency but high-consequence risks and rewards. It's why so many of us are so eager to play the lottery, and simultaneously why we're catastrophically afraid of ebola and plane crashes, when we're far more likely to die from something mundane, like getting hit by a truck. One of the examples where science and this type of fear-based fallacy intersect is the science of asteroid strikes. With all we know about asteroids today, here's the actual risk to humanity, and it's much lower than anyone cares to admit.
Space

India Targets July/August To Test Its Space Shuttle 77

Posted by Soulskill
from the hurry-up,-the-ISS-needs-pizza dept.
New submitter gubol123 writes with news that India is close to launching its own space shuttle for the first time. Their space program, ISRO, is planning the shuttle's first test flight for some time in July or August. The unmanned shuttle will fly to a height of approximately 70 kilometers before splashing down in the Bay of Bengal. Oddly, the vehicle itself probably won't be recovered. When it lands in the water, it will sink, and there are no plans to try to bring it back to the surface. The most important obstacles are surviving re-entry and simply staying intact during splashdown. Scientists and ISRO engineers are hoping the shuttle program, when finished, will drop the cost of placing objects in orbit by a factor of 10.
Mars

Martian Moons May Have Formed Like Earth's 50

Posted by Soulskill
from the carved-out-of-green-cheese dept.
sciencehabit writes: Astronomers have long believed that Mars snatched its two moons — Phobos and Deimos — from the asteroid belt. That would explain why the objects look like asteroids—dark, crater-pocked, and potato-shaped. But computer simulations by two independent teams of astronomers (abstract 1, abstract 2) indicated that Mars's moons formed much like ours did, after a giant space rock smashed into the planet and sprayed debris into orbit.