14 Aug 2017, 23:29 UTC Scientists developed new theories and 3-D simulations to explain what’s at work in the mysterious jets of energy and matter beaming from the center of galaxies at nearly the speed of light. As much as half of the jets’ energy can escape in the form of X-rays and stronger forms of radiation. Researchers showed how two different mechanisms serve to reduce about half of the energy of these jets. Next Previous
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27 Jul 2017, 10:00 UTC Using new observations from ESO’s VLT Survey Telescope, astronomers have discovered three different populations of young stars within the Orion Nebula Cluster. This unexpected discovery adds very valuable new insights for the understanding of how such clusters form. It suggests that star formation might proceed in bursts, where each burst occurs on a much faster time-scale than previously thought. Next Previous
19 Jul 2017, 08:17 UTC Next Previous
NASA's Goddard Space Flight Center 16 Aug 2017, 17:00 UTC NASA’s Lunar Reconnaissance Orbiter (LRO) team invites the public to wave at the Moon on Aug. 21 as LRO turns its camera toward Earth.
NASA Breaking News 16 Aug 2017, 13:35 UTC NASA’s newest astronaut candidates, a diverse dozen women and men, will participate in media interviews and a final news conference before training on Tuesday, Aug. 22, at the agency’s Johnson Space Center in Houston.
ESA Science & Technology 16 Aug 2017, 08:00 UTC While surveying the positions of over a billion stars, ESA's Gaia mission is also measuring their colour, a key diagnostic to study the physical properties of stars. A new image provides a preview of Gaia's first full-colour all-sky map, which will be unleashed in its highest resolution with the next data release in 2018.
NASA's Goddard Space Flight Center 15 Aug 2017, 14:20 UTC Venus looks bland and featureless in visible light, but change the filter to ultraviolet, and Earth’s twin suddenly looks like a different planet. Dark and light areas stripe the sphere, indicating that something is absorbing ultraviolet wavelengths in the planet’s cloud tops.
California Institute of Technology 14 Aug 2017, 22:38 UTC Astronomers using Caltech's Owens Valley Radio Observatory (OVRO) have found evidence for a bizarre lensing system in space, in which a large assemblage of stars is magnifying a much more distant galaxy containing a jet-spewing supermassive black hole. The discovery provides the best view yet of blobs of hot gas that shoot out from supermassive black holes.
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Astronaut.com 17 Aug 2017, 11:47 UTC We dream of going to the stars, but the reality is that we haven’t made it any farther than our own moon. We’re reaching for Mars now, but to date, no one has gotten farther than the Voyager spacecraft. Voyager 1 and 2 started their epic journeys in 1977 — that’s 40 years ago this year. So where did these spacecraft get their start and where are they going now, after their four decades in space? The Ancestors of Modern Computers For machines that have been flying through space for 40 years, the Voyager probes, for all their size, have less computing power than your favorite digital watch. The equipment is so well built, though, that it’s still sending back information even now, 40 years after launch. They’re doing all this while working in the coldest, darkest and most inhospitable environment known to man, protected from any electromagnetic inference. EMI testing is designed to test a device to see how it will respond to electromagnetic fields and is still used today to determine the kind of shielding a new device will need before it enters the market. Starting Out The Voyager mission almost didn’t happen — it was contingent on ...
Space Fellowship 16 Aug 2017, 21:24 UTC Observations of “Jellyfish galaxies” with ESO’s Very Large Telescope have revealed a previously unknown way to fuel supermassive black holes. It seems the mechanism that produces the tentacles of gas and newborn stars that give these galaxies their nickname also makes it possible for the gas to reach the central regions of the galaxies, feeding the black hole that lurks in each of them and causing it to shine brilliantly. The results appeared today in the journal Nature.
Space Fellowship 16 Aug 2017, 21:23 UTC Experiments seeking a better understanding of Parkinson’s disease and the origin of cosmic rays are on their way to the International Space Station aboard a SpaceX Dragon spacecraft following today’s 12:31 p.m. EDT launch.
Universe Today 16 Aug 2017, 19:20 UTC In their pursuit of learning how our Universe came to be, scientists have probed very deep into space (and hence, very far back in time). Ultimately, their goal is to determine when the first galaxies in our Universe formed and what effect they had on cosmic evolution. Recent efforts to locate these earliest formations have probed to distances of up to 13 billion light-years from Earth – i.e. about 1 billion years after the Big Bang. “These objects are important to understanding the evolution of galaxies as a whole since the large amounts of dust already present in this source, only 760 million years after the Big Bang, means that it is an extremely massive object. The mere fact that such massive galaxies already existed when the Universe was still so young puts strong constraints on our understanding of galaxy mass buildup. Furthermore the dust needs to form in a very short time, which gives additional insights on the dust production from the first stellar population.” The ability to look deeper into space, and farther back in time, has led to many surprising discoveries of late. And these have in turn challenged some of our assumptions about what happened in ...