The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

Mars, Venus, Jupiter and Saturn should be visible to the naked eye, but with a telescope you can spot Neptune and Uranus.

According to NASA, four to five planets being visible across the sky at the same time happens only once every few years.

Scientists believe that two asteroids might be fragments of long-lost "planetary embryos" from the early solar system.

James Webb Space Telescope captures HH 30’s disc, revealing dust movement, jets, and planetary formation processes.

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

To get somewhere in outer space, you can’t exactly drive in a straight line. Orbits are tricky things, and sending a probe to ...

Welcome to this month’s edition of “What’s up in the sky?” February has a nice lineup of planets and some eye-catching ...

A shortcut for New Yorkers to spot some of the planets is to look for them when they are near the moon. On Feb. 1, Venus will ...

This week sees a special stargazing event, as as up to six planets will be visible in a line in the night sky.