Astronomers have discovered 16 close-knit pairs of supermassive black holes in merging galaxies. These black-hole pairs, also called binaries, are about a hundred to a thousand times closer together than most that have been observed before, providing astronomers a glimpse into how these behemoths and their host galaxies merge -- a crucial part of understanding the evolution of the universe.
Astronomers have produced the largest-ever map of the sky. This survey has made it possible to build an image from which a source catalog of unprecedented quality covering a large fraction of the sky has been extracted in five colors (sky cover, depth and precision of luminosity measurements). This catalog, which contains around 470 million objects (galaxies, stars, quasars, etc.), is now being published.
Galaxy X: An entire galaxy—made mainly of dark matter—may be lurking just outside our own, scientists say.
The most massive black holes began growing at a very fast rate when the universe was only about 1.2 billion years old, according to a new study by astronomers in Tel Aviv.
(PhysOrg.com) -- Cosmologists have come up with a new way to solve their problems. They are inviting scientists, including those from totally unrelated fields, to participate in a grand competition. The idea is to spur outside interest in one of cosmology
NASA's Fermi Gamma-ray Space Telescope unveiled a previously unseen structure centered on the Milky Way. The feature spans 50,000 light-years.
The experiments that can only be conducted in space
The frigid ice of Jupiter
And, like cosmic Russian dolls, our universe maybe nested inside a black hole in another universe, a new study says.
