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

Astronomers from MIT, the University of Liège in Belgium, and other institutions have stumbled upon a truly bizarre planet—an ...

According to Robin Scagell, vice-president of the Society for Popular Astronomy, this planetary gathering is among the best ...

Astronomers at the NASA Goddard Space Flight Center may have discovered a star hurtling through the Milky Way with a planet ...

This is the last time the seven planets will appear together in the night sky until 2040. Here's when it's happening – and ...

The system is believed to be traveling at least 1.2 million miles per hour (1.93 million kilometers per hour), according to a ...

If you missed seeing the alignment of six planets in the sky in January, don't worry. Another one is coming up in February.

Notice how Mercury, Saturn and Neptune are a bit more in line with the sun. We can only see those for the first hour or two ...

In case you missed the planetary alignment last month, don't worry — the "planet parade" continues into February, offering skygazers plenty of time to catch a glimpse of the six "aligning" planets.

Neptune - Neptune is faint and challenging to spot ... Larger telescopes can reveal the planet's Great Red Spot. Mars-Mars reached opposition on Jan. 12, making it visible all night. However, don’t ...