Latest Smithsonian Center for Astrophysics Stories
Dr Brian Geoffrey Marsden passed away Thursday, Nov 18 at the age of 73 following a prolonged illness.
NASA's Fermi Gamma-ray Space Telescope has unveiled a previously unseen structure centered in the Milky Way.
How do astronomers weigh a star that's trillions of miles away and way too big to fit on a bathroom scale? In most cases they can't, although they can get a best estimate using computer models of stellar structure.
Astronomers using the South Pole Telescope report that they have discovered the most massive galaxy cluster yet seen at a distance of 7 billion light-years.
The Magellanic Stream is an arc of hydrogen gas spanning more than 100 degrees of the sky as it trails behind the Milky Way's neighbor galaxies, the Large and Small Magellanic Clouds.
The Panoramic Survey Telescope & Rapid Response System (Pan-STARRS) PS1 telescope has discovered an asteroid that will come within 4 million miles of Earth in mid-October.
When NASAâ€™s Solar Probe Plus (SPP) launches before the end of the decade, it will carry a suite of cutting-edge scientific instruments.
Beyond the orbit of Neptune reside countless icy rocks known as trans-Neptunian objects (TNOs).
Now that astronomers are finding rocky worlds orbiting distant stars, they're asking the next logical questions: Do any of those worlds have volcanoes?
Tight double-star systems might not be the best places for life to spring up, according to a new study using data from NASA's Spitzer Space Telescope
- To swell, as grain or wood with water.