The early growth of the gas giant carved rings that formed primitive meteorites and shaped the architecture of the inner solar system. New research from Rice University reveals that Jupiter played a ...

Not all of the solar system’s building blocks formed simultaneously. Some of the first solid bodies, or planetesimals, formed ...

A new study suggests yet another theory for a possible extra planet in our solar system, likely of a size between Mercury and ...

A distant gas giant the size of 10 Jupiters is now the first planet outside Earth's solar system to be mapped in three ...

While most scientists believe it’s a natural comet, one Harvard astronomer has suggested its unusual features could hint at ...

Interstellar comet 3I/ATLAS is passing safely through our solar system. Learn about its discovery, its distant path, and why ...

An international team of astronomers has shown for the first time that it is possible to map exoplanets using a technique ...

Visual: In this diagram, J, S, U, and N are the solar system’s giant planets. What’s the collective name for the objects in ...

In the cold, distant reaches of the Solar System, far beyond Pluto, astronomers have just identified what could be a new dwarf planet. It's called 2017 OF 201, a rock that appears to be some 700 ...

All of our solar system’s planets are lining up in the night sky at once this week. This extraordinary celestial event will see the sky scattered with seven visible planets in what is known as a great ...