The six planets were visible in the days immediately leading up to Jan. 21, and for about four weeks afterward. Mars, Venus, ...

In Earth's upper atmosphere, a fast-moving band of air called the jet stream blows with winds of more than 275 miles (442 km) ...

While four members of this 'parade' can be easily spotted in a clear dark sky, finding the final two can be something of a ...

Data collected by NASA's InSight lander suggest that ancient internal processes are responsible for the "Martian dichotomy" ...

Astronomers have discovered extremely powerful winds pummeling the equator of WASP-127b, a giant exoplanet. Reaching speeds ...

The new composite image, which combines hundreds of photos from the Hubble Space Telescope, shows the Andromeda Galaxy with ...

Because planets always appear in a line, the alignment isn't anything out of the norm. What's less common is seeing so many ...

Research indicates an interstellar object might have altered the orbits of Jupiter, Saturn, Uranus, and Neptune billions of years ago ...

Observations of WASP-127b, a giant gas exoplanet more than 500 light years from Earth, suggest it has phenomenally high wind ...

The 'peculiar' objects don't resemble anything scientists have seen before and could even be an entirely new kind of star.

Planet Nine", dubbed, has fascinated scientists for its ability to account for "anomalous" motions of objects located faraway ...