New results from NASA’s Dawn orbiter show that the largest asteroid (and acknowledged dwarf planet) must possess a global layer of water ice that lies just below its dark, dusty surface.
A Hubble image of a nearby, massive elliptical galaxy (NGC 4696) reveals tenuous filaments that appear to be connected to the growth of the galaxy’s supermassive black hole.
Curiosity scientists have tracked the transformation of Gale Crater’s environment as it became more, then less, acidic over millions of years.
Welcome to Mars: the European Space Agency’s ExoMars Trace Gas Orbiter sets up shop around the Red Planet.
An incredible blaze of light discovered more than a year ago still has astronomers baffled as to its cause. The answer (supernova or black-hole-shredded star) may be contrary to recent headlines.
Have you ever tried to see a Siriusrise? If you can find a spot with a good view down to the east-southeast horizon, watch for Sirius to come up about two fists at arm’s length below Orion’s Belt.
Try your hand at observing the handful of “shooting stars” delivered by this little-known annual meteor shower.
Colorful lights twinkle everywhere during the holiday season, including up above in some remarkably tinted double stars. Find out what makes them so alluring.
Doing some holiday shopping for a telescope, or know someone who is? You’ll want to read this.