Over the next two weeks, for the first time in more than a decade, you can see all of the naked-eye planets — from Mercury to Saturn — together in the predawn sky.
There are eight planets in the solar system: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.
A Hubble legacy program has returned high-res pictures of Jupiter, revealing changes to the Great Red Spot and mysterious new wisps in the North Equatorial Band.
Spot Uranus and Neptune, and relive the original discoveries.
The King of Planets reached opposition in the first half of January but it's still big and bright, a captivating sight no matter how you look at it.
Neptune reaches opposition next week, giving amateurs the chance to track its unique, backwards-orbiting moon Triton.
An early peak at a forming star system reveals tantalizing clues about its origin.
When it comes to both mass and volume, Jupiter is the largest planet in the solar system, while Mercury is the smallest.