Mars, which will appear as a reddish dot, will be the highest in the sky, located above the southern horizon in the ...

Before Apollo astronauts set foot upon the moon, much remained unknown about the lunar surface. While most scientists ...

The ripples suggest that the lake was free of ice at one point.

Fluffy strands of cosmic gas and dust illuminated by bright young stars form a beautiful cloudscape in a neighboring nebula.

Artist's concept of light flares along Sag A*'s accretion disk. (Credit: NASA, ESA, CSA, Ralf Crawford (STScI)) ...

Neptune is way, way out there, orbiting the Sun some 2.8 billion miles away. That’s likely why a new analysis of some old photos of the ice giant have just revealed something a bit funny: We’ve been ...

When was Pluto discovered? Pluto was discovered in 1930 by Clyde Tombaugh, an American astronomer at the Lowell Observatory in Flagstaff, Arizona. Cold, dark and distant, it was n ...