If you're new here, you may want to subscribe to this blog via e-mail or my RSS feed. I also am on Twitter.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
NASA researchers are using AI technologies to detect gravitational waves. The work is described in a new article in Physics Review D this month.