Moons may seem like quiet companions to the planets, but many of them are worlds every bit as fascinating as the planets themselves. Some are covered in oceans, some erupt with lava, and others hide ...

Skygazers across Texas and beyond can catch a glimpse of six planets arcing across the night sky this week in a so-called ...

Want to catch a glimpse of the planetary alignment from Florida? Here's what to know, including a list of official dark sky ...

A group of astronomers has found a solar system 116 light-years from Earth that seems to challenge current theories about how ...

Stargazers can get a rare glimpse of several planets aligning this week. The event is referred to as a planetary parade, and ...

Your best bet to see the parade is to find a dark place with a clear view of the western horizon about 30 minutes after sunset. Many astronomers recommend using mobile apps like Stellarium or Star ...

“While 3I/ATLAS is a visitor from interstellar space, travelling from outside the Solar System, its behaviour is completely ...

A newly studied solar system breaks the usual planet pattern, raising fresh questions about how rocky and gas planets form.

Out in the Kuiper Belt, the massive doughnut of debris beyond Neptune, about one in 10 kilometer-scale objects have surprised ...

An international team of astronomers has discovered a distant planetary system that challenges long-standing theories of how planets form. Across our galaxy, astronomers routinely observe a ...

Planetary systems such as our solar system take hundreds of millions of years to evolve. Since humanity has only existed for a sliver of that time, astronomers have only observed planetary systems at ...

A large planetary alignment will be visible after sunset. Learn which planets you can see and when the next alignments happen.