Astronomers studying a newborn star have caught a detailed glimpse of planets forming around it, revealing a never-before seen stage of planetary evolution. Large gas giant planets appear to be clearing a gap in the disk of material surrounding the star, and using gravity to channel material across the gap to the interior, helping the…
Astronomers have discovered what may be five planets orbiting Tau Ceti, the closest single star beyond our solar system whose temperature and luminosity nearly match the sun’s. If the planets are there, one of them is about the right distance from the star to sport mild temperatures, oceans of liquid water, and even life. Don’t…
A new study challenges the notion that the force of an exploding star forced the formation of the solar system. University of Chicago researchers Haolan Tang and Nicolas Dauphas found the radioactive isotope iron 60 — the telltale sign of an exploding star—low in abundance and well mixed in solar system material. As cosmochemists, they…
Astronomers have spotted seven galaxies that existed just a few hundred million years after the universe’s birth, including one that may be the oldest found to date. The potential record-holding galaxy, known as UDFj-39546284, likely existed when the universe was just 380 million years old, researchers said, and may be the farthest galaxy ever seen….
University of North Dakota scientist Mark Hoffmann’s version of Star Search goes a long way — a very long way — out into the universe. Hoffmann and his Norwegian colleagues Tryve Helgaker, E.I. Tellgren and K. Lange have discovered a molecular-level interaction that science had puzzled over for decades but had never seen. That discovery,…
Some 330 million years ago, a galaxy in our cosmic neighborhood scored a bullseye, shooting right through the heart of large neighboring galaxy. The rare collision restructured the bigger galaxy, NGC 922, giving it the unusual, lopsided ring of hot pink clouds seen in images from the Hubble Space Telescope. Galaxies like NGC 922 are…
As far back in time as astronomers have been able to see, the universe has had some trace of heavy elements, such as carbon and oxygen. These elements, originally churned from the explosion of massive stars, formed the building blocks for planetary bodies, and eventually for life on Earth. Now researchers have peered far back…
U.S. astronomers say they’ve observed a young star with a rotating dust disk considered the youngest still-forming planetary system ever found. The infant star surrounded by a swirling disk of dust and gas is more than 450 light-years from Earth in the constellation Taurus, the National Radio Astronomy Observatory reported. While just one-fifth the mass…
Astronomers have found a galaxy that represents a new type, and falls within the range of active galaxies known as Seyfert galaxies. It glows green because of X-rays spewing from a gigantic black hole at its center that weighs several million to billion times more than the sun. Dubbed a “green bean” galaxy, it appears…
An international team of researchers studying the characteristics of the protoplanetary disk of the star UX Tauri A, have determined that its dust particles are large in size and non-spherical in shape. This exciting result shows that these dust grains are colliding with and adhering to each other, a process that will lead to their…