milky way galaxy
Latest
Astronomers find stellar black hole so large it shouldn't exist
Just because there's a picture of a black hole doesn't mean astronomers have figured out how they work. Chinese-led researchers have detected a stellar black hole in the Milky Way with a mass so large that it breaks current stellar evolution models. LB-1, a black hole 15,000 light-years away, has a mass 70 times greater than that of the Sun -- previous estimates suggested that no stellar black hole would have more than 20 times the Sun's mass. Scientists expected many dying stars to shed most of their gas, making something this large impossible without readjusting theories.
Jon Fingas12.01.2019
European Space Agency creates one billion pixel camera, calls her GAIA
When we hear the name GAIA, our memory automatically zooms back to the Whoopi Goldberg-voiced Mother Earth from Captain Planet. This isn't that GAIA, but it does have to do with planets. Back at the turn of the millennium, the European Space Agency devised an ambitious mission to map one billion stars in our Milky Way galaxy -- in 3D (insert Joey Lawrence 'whoa!'). To do this, it enlisted UK-based e2v Technologies and built an immense digital camera comprised of 106 snugly-fit charge coupled devices -- the largest ever for a space program. These credit card-shaped, human hair-thick slabs of silicon carbide act like tiny galactic eyes, each storing incoming light as a single pixel. Not sufficiently impressed? Then consider this: the stellar cam is so all-seeing, "it could measure the thumbnails of a person on the Moon" -- from Earth. Yeah. Set to launch on the Soyuz-Fregat sometime this year, the celestial surveyor will make its five-year home in the Earth-Sun L2 Lagrange point, beaming its outerspace discoveries to radio dishes in Spain and Australia -- and occasionally peeping in your neighbor's window.
Joseph Volpe07.10.2011