Black holes shape the growth and death of the stars around them through their powerful gravitational pull and explosive ejections of energy. In a recent Science paper, researchers predicted the formation of accretion disks and relativistic jets that warp and bend more than previously thought, shaped by the extreme gravity of the black hole and by powerful magnetic forces generated by its spin.
There is research that is off the wall, some off the charts and some off the planet, such as what an aerospace and physics professor is exploring. It's a plan to deflect a killer asteroid by using paint, and the science behind it is absolutely rock solid, so to speak, so much so that NASA is getting involved and wants to know much more.
Unlike comets, asteroids are not characterised by exhibiting a trail, but there are now ten exceptions. Spanish researchers have observed one of these rare asteroids from the Gran Telescopio Canarias (Spain) and have discovered that something happened around the 1st July 2011 causing its trail to appear: maybe internal rupture or collision with another asteroid.
ESA's Herschel space observatory has detected a cool layer in the atmosphere of Alpha Centauri A, the first time this has been seen in a star beyond our own Sun. The finding is not only important for understanding the Sun's activity, but could also help in the quest to discover proto-planetary systems around other stars.
Gravity remains the dominant force on large astronomical scales, but when it comes to stars in young star clusters the dynamics in these crowded environments cannot be simply explained by the pull of gravity.
Scientists believe that their light source is a very bright gaseous disk surrounding a supermassive black hole at the center of the galaxy. Gas streams called "outflows" move outward from the disk and have a substantial influence on surrounding interstellar/intergalactic regions. However, because quasars at large distances look like mere stars, their internal structures are not easy to investigate.
The fledgling Beidou satellite navigation system will soon benefit hundreds of millions of users, and provide a cheaper and in some cases better alternative than the Global Positioning System, industry specialists said.
Australian researchers have developed a substance that looks and behaves like soil from the moon's surface and can be mixed with polymers to create 'lunar concrete', a finding that may help advance plans to construct safe landing pads and mines on the moon.
SpaceWorks Enterprises, Inc. (SEI) today released an update to its nanosatellite and microsatellite market analysis study. The study presents the latest observations, trends, and projections for the nano/microsatellite market.