Latest Smithsonian Center for Astrophysics Stories
Sky viewers might get to enjoy some spectacular Northern Lights, or aurorae, in the early morning hours of August 4th.
A hundred million years ago, a triple-star system was traveling through the bustling center of our Milky Way galaxy when it made a life-changing misstep.
The question of what causes a Type Ia supernova is one of the great unsolved mysteries in astronomy.
For over 10 years, NASA's Chandra X-ray Observatory has repeatedly observed the Andromeda Galaxy for a combined total of nearly one million seconds.
Astronomers have discovered a relic from the early universe - a star that may have been among the second generation of stars to form after the Big Bang.
Astronomers have found the first clear evidence of a binary quasar within a pair of actively merging galaxies.
For the first time, astronomers have found a supernova explosion with properties similar to a gamma-ray burst, but without seeing any gamma rays from it.
With NASA's Kepler mission showing the potential to detect Earth-sized objects, habitable moons may soon become science fact.
Astronomers announced today that they have discovered a "super-Earth" orbiting a red dwarf star 40 light-years from Earth.
About 550 light-years from Earth, a star like our Sun is writhing in its death throes.