Astronomy
Grand challenges of the principalship?
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Apr 17 9:58PM Dangerously Irrelevant | @mcleod

Here Are the Necessary Ingredients for a Life-Supporting Exoplanet
The hunt for exoplanets has been so successful that they now have their own periodic table, ranging from small planets orbiting in their star's hot zone to large Jovian planets circling within a distant, cold zone far away from their star. In between these extremes, lies the habitable zone, which researchers believe is most likely to support extraterrestrial life.
Apr 17 6:58PM Seeker

Richard Feynman from A to Z
Robert P Crease reports from the APS April meeting, where Virginia Trimble revealed her favourite Richard Feynman stories If anyone has still-unheard stories to tell about Richard Feynman, it's the astronomer Virginia Trimble of the University of California, Irvine. That, plus the enduring fascination of Feynman himself, was among several reasons that a session on The legacy of Richard Feynman packed a ballroom on Monday at the April meeting of the American Physical Society (APS) in Columbus, Ohio.
Apr 17 1:15PM Physics World

Ramp compression of iron provides insight into core conditions of large rocky exoplanets
In a paper published today by Nature Astronomy, a team of researchers from Lawrence Livermore National Laboratory (LLNL), Princeton University, Johns Hopkins University and the University of Rochester have provided the first experimentally based mass-radius relationship for a hypothetical pure iron planet at super-Earth core conditions. This discovery can be used to evaluate plausible compositional space for large, rocky exoplanets, forming the basis of future planetary interior models, which in turn can be used to more accurately interpret observation data from the Kepler space mission and aid in identifying planets suitable for habitability.
Apr 17 12:53PM phys.org

The current ability to test theories of gravity with black hole shadows
Astrophysicists at Frankfurt, the Max Planck Institute for Radio Astronomy in Bonn, and Nijmegen, collaborating in the project BlackHoleCam, answer this question by computing the first images of feeding non-Einsteinian black holes: it is presently hard to tell them apart from standard black holes. Their findings are published as Advance Online Publication (AOP) on the Nature Astronomy website on 16 April 2018.
Apr 17 11:49AM phys.org

Data Science for the 99%: helping everyone with decision-making
Email Print HDR/Data Science Seminar Series - April 16th - 2pm - Room E3410 April 16, 2018 2:00 PM to April 16, 2018 3:00 PM NSf Room E3410 Save the Date We will have two speakers co-presenting, Andrew Moore (http://www.cs.
Apr 17 6:59AM NSF

Lasers squeezed iron to mimic the conditions of exoplanet cores
Mark Meamber/NIF Physicists have simulated the cores of some large rocky exoplanets by pummeling iron with lasers. The resulting measurements give the first clue to how iron might behave inside planets outside the solar system that are several times the mass of Earth, researchers report April 16 in Nature Astronomy.
Apr 17 6:38AM Science News

Viewpoint: Listening for the Cosmic Hum of Black Holes
A new analysis technique would allow the gravitational-wave background from distant black hole mergers to be detected in days instead of years.The recent detection of gravitational waves from outer space has ushered in a new era of astronomy.
Apr 16 6:33PM Physics

Once upon a time, an exoplanet was discovered: Personal recollections of an astrophysicist shed new light on the 1995 discovery on 51 Pegasi b
Science News from research organizations Date: Source: Springer Summary: In recent history, a very important achievement was the discovery, in 1995, of 51 Pegasi b, the first extrasolar planet ever found around a normal star other than the Sun. Share: FULL STORY In recent history, a very important achievement was the discovery, in 1995, of 51 Pegasi b, the first extrasolar planet ever found around a normal star other than the Sun.
Apr 16 6:19PM ScienceDaily

This Is What A World Without Smartphones Looks Like
In the woods of rural West Virginia, there's a town that technology forgot. Green Bank is a small village nestled in a valley of the Appalachians where, in the 1950s, the U.
Apr 16 4:10PM Co.Design

Huge solar 'tornadoes' don't spin after all, study shows
Giant plasma tornadoes raging across the surface of the sun don't actually spin like astronomers once thought, new research shows. Massive solar tornadoes, formally known as tornado prominences, which were first observed about 100 years ago, seemed to bear a striking resemblance to tornadoes on Earth.
Apr 16 3:31PM lifeboat.com

How to hunt for a black hole with a telescope the size of Earth
Here's how to catch a black hole. First, spend many years enlisting eight of the top radio observatories across four continents to join forces for an unprecedented hunt.
Apr 16 3:06PM Nature News & Comment

Asteroid buzzed Earth this weekend
A medium-sized asteroid buzzed by Earth just hours after being detected this weekend. First observed at Catalina Sky Survey in Arizona on Saturday, April 14, 2018, the asteroid - which has been labeled 2018 GE3 - swept past us at about half the Earth-moon distance early Sunday morning according to clocks in North America.
Apr 16 12:55PM EarthSky.org

The Dark Matter of Astronomy Hype
Just before Easter (and, perhaps more significantly, just before April Fool's Day) a paper by van Dokkum et al. was published in Nature with the title A Galaxy Lacking Dark Matter.
Apr 16 10:59AM In the Dark

Opal Discovered in Antarctic Meteorite
Planetary scientists have discovered pieces of opal in a meteorite found in Antarctica, a result that demonstrates that meteorites delivered water ice to asteroids early in the history of the solar system. Led by Professor Hilary Downes of Birkbeck College London, the team announce their results at the National Astronomy Meeting in Nottingham.
Apr 16 2:45AM geologyin.com

Nasa to launch Tess on hunt for 20,000 new worlds
If the vagaries of weather and rocket science do not intervene, the most ambitious search for alien worlds around the brightest stars in the sky will begin on Monday with the launch of Nasa's newest planet-hunting spacecraft. After final preparations at the weekend, the Transiting Exoplanet Survey Satellite, or Tess, is on course for take off as early as 6.
Apr 15 11:34PM the Guardian

Whoa! New and giant telescopes ahead
By Megan Ray Nichols, Schooled By Science Human beings have been looking at the stars for as long as we've had eyes, wondering what was out there. The early astronomers used the stars to tell time and to navigate, but it wasn't until Galileo became the first to point a telescope skyward in 1609 that the present age of astronomy was born.
Apr 15 1:02PM EarthSky.org

STARS IN THEIR EYES: Play tells little-known story of the women who changed the way we see the universe
Decades before female African-American mathematicians played a vital role in the early years of NASA, women made a similarly unusual contribution to astronomy. Like the 2016 film Hidden Figures, the new play Women Who Mapped the Stars raises awareness of women who defied expectations and inequities to influence a new field of science.
Apr 15 4:09AM Wicked Local Franklin, MA

Artificial intelligence helps to predict likelihood of life on other worlds
Developments in artificial intelligence may help us to predict the probability of life on other planets, according to new work by a team based at Plymouth University. The study uses artificial neural networks (ANNs) to classify planets into five types, estimating a probability of life in each case, which could be used in future interstellar exploration missions.
Apr 14 11:41PM Astrobiology Magazine

Using Ai to detect Gravitational Waves with the Blue Waters Supercomputer
NASA researchers are using AI technologies to detect gravitational waves. The work is described in a new article in Physics Review D this month.
Apr 14 1:51PM insideHPC