The future of our solar system has long captivated both scientists and stargazers alike. As highlighted in a recent Live ...

Evidence that rocky planets beyond Jupiter formed as rapidly, and at the same time, as the inner planets could transform our understanding of how planets take shape — not only in our solar system, but ...

Every Planet in the Solar System Is on Display for a Short Time in 'Planet Parade' People who look up at the night sky to the south will be able to see planets Mercury, Venus, Mars, Jupiter, and ...

Since all of the planets in the Solar System orbit in the same plane (think of the Solar System like a fried egg), all the planets are visible on—and only on—the ecliptic.

"It is possible that a planet once existed in the solar system but was later ejected, causing the unusual orbits we see today ...

Astronomers have discovered the earliest seeds of rocky planets forming in the gas around a baby sun-like star, providing a ...

All eight of the solar system’s “major” planets appear in this illustration, but the actual number of planetary bodies orbiting our star is far greater. Digital Vision/Getty Images.

Don't worry though—it's not like one planet simply fell out of the solar system. We'll explain what happened and also show you some tricks for remembering the order of all of the planets that ...

The solar system consists of eight planets, several dwarf planets, hundreds of moons, and billions of asteroids, comets and meteoroids. The exact boundaries of the solar system ar ...

Astronomers first identified these minerals using the now-three-year-old James Webb Space Telescope. To see where exactly the ...