Look east at sunset on Jan. 3 to see the fully-lit lunar disk climb over the eastern horizon. It will likely take on a ...

Astronomers have sighted the oldest known stellar explosion, dating back to when the universe was less than a billion years ...

As humanity prepares to take its first steps on Mars, a comprehensive report released by the National Academies of Sciences, ...

A new report published Tuesday, titled “A Science Strategy for the Human Exploration of Mars,” represents the answer from ...

New simulations of Milky Way-like galaxies reveal that the strange split between two chemically distinct groups of stars may ...

A brilliant point of light is rising in the eastern sky soon after dark this month, drawing comparisons to the "Star of ...