The two largest planets in our solar system, Jupiter and Saturn, also have the largest satellite systems, or the most moons.

With a diameter of 88,846 miles at its equator, Jupiter is the biggest planet in our solar system. It’s eleven times larger than Earth, so big in fact that its gravitational forces are thought to be ...

For some time, astronomers have theorized that there is a connection between planetary mass and rotation. In the solar system ...

Astronomers have unveiled the largest planet-forming disk ever observed around a young star, a sprawling structure where gas and dust are actively assembling new worlds. The discovery pushes the ...

Astronomers at the Center for Astrophysics | Harvard & Smithsonian have captured what may be the biggest planet-forming disk ever seen around a young star; and it looks unexpectedly wild. Using NASA’s ...

The largest survey of exoplanets using an observatory atop Mauna Kea on the Big Island confirms a long-predicted relationship ...

The Hubble Space Telescope took this image of Jupiter in September 2021. It depicts the planet's colorful, turbulent atmosphere organized by high-speed jet streams into dark belts and light-colored ...