Big black holes can block new stars 23 October 2014, 12:00 pm Research provides new evidence that it is jets of “radio-frequency feedback” streaming from mature galaxies’ central black holes that prevent hot free gas from cooling and collapsing into baby stars.
NASA Mars orbiters study comet flyby 20 October 2014, 12:00 pm The Mars Reconnaissance Orbiter, MAVEN, and Mars Odyssey all are part of a campaign to study Comet Siding Spring and possible effects on the martian atmosphere from gases and dust released by the comet.
3-D map of the adolescent universe 23 October 2014, 9:41 pm Using extremely faint light from galaxies 10.8-billion light years away, scientists have created one of the most complete, three-dimensional maps of a slice of the adolescent universe. The map shows a web of hydrogen gas that varies from low to high density at a time when the universe was made of a fraction of the dark matter we see.
The perfume of the comet 23 October 2014, 3:18 pm How does a comet smell? Since early August the Rosetta Orbiter Sensor for Ion and Neutral Analysis (ROSINA) is sniffing the fumes of the comet Churyumov-Gerasimenko with its two mass spectrometers. The detected chemistry in the coma of the comet is surprisingly rich already at more than 400 million kilometers from the Sun.
Titan glowing at dusk and dawn 22 October 2014, 11:01 pm New maps of Saturn's moon Titan reveal large patches of trace gases shining brightly near the north and south poles. These regions are curiously shifted off the poles, to the east or west, so that dawn is breaking over the southern region while dusk is falling over the northern one.
Two families of comets found around nearby star: Biggest census ever of exocomets around Beta Pictoris 22 October 2014, 7:06 pm The HARPS instrument at ESO’s La Silla Observatory in Chile has been used to make the most complete census of comets around another star ever created. Astronomers have studied nearly 500 individual comets orbiting the star Beta Pictoris and has discovered that they belong to two distinct families of exocomets: old exocomets that have made multiple passages near the star, and younger exocomets that probably came from the recent breakup of one or more larger objects.
New window on the early Universe 22 October 2014, 2:43 pm Scientists see good times approaching for astrophysicists after hatching a new observational strategy to distill detailed information from galaxies at the edge of the Universe. Using two world-class supercomputers, the researchers were able to demonstrate the effectiveness of their approach by simulating the formation of a massive galaxy at the dawn of cosmic time. The ALMA radio telescope – which stands at an elevation of 5,000 meters in the Atacama Desert of Chile, one of the driest places on earth – was then used to forge observations of the galaxy, showing how their method improves upon previous efforts.
NASA Webb's heart survives deep freeze test 22 October 2014, 3:07 am After 116 days of being subjected to extremely frigid temperatures like that in space, the heart of the James Webb Space Telescope, the Integrated Science Instrument Module and its sensitive instruments, emerged unscathed from the thermal vacuum chamber at NASA's Goddard Space Flight Center in Greenbelt, Maryland.
Cosmic rays threaten future deep-space astronaut missions 21 October 2014, 7:50 pm Crewed missions to Mars remain an essential goal for NASA, but scientists are only now beginning to understand and characterize the radiation hazards that could make such ventures risky, concludes a new article.
Big black holes can block new stars 21 October 2014, 5:07 pm Massive black holes spewing out radio-frequency-emitting particles at near-light speed can block formation of new stars in aging galaxies, a study has found.