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 ...

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

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, ...

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 ...