Scientists believe that two asteroids might be fragments of long-lost "planetary embryos" from the early solar system.

Mars, Venus, Jupiter and Saturn should be visible to the naked eye, but get a telescope and you can spot Neptune and Uranus.

The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

An object eight times the mass of Jupiter may have swooped around the sun, coming superclose to Mars' present-day orbit ...

Though the planets are always “aligned,” seeing more than four in the sky is more uncommon. February’s lineup is a chance to ...

But in reality, our Solar System’s disk is far from flat ... could be pretty chaotic—it could kick one of our planets out of our system entirely, or warp both the disc of the Solar System ...

Long ago, a planetary object eight times the mass of Jupiter may have once visited the solar system and altered […] The post ...

A new type of exoplanet has been discovered: Enaiposha, also known as GJ 1214 b. Long heralded as a mini-Neptune, new observations have indicated that it is a member of a category never seen before ...

Aside from Earth, no planet in the solar system captures our imagination quite like Mars. The Red Planet is one of the few places in our cosmic neighborhood where extraterrestrial life may have ...

Jan. 15, 2025 — New observational data and simulation models have confirmed a new type of planet unlike anything found in the Solar System. This provides another piece of the puzzle to ...

The moon has “many engagements” with the planets in February, NASA said in its monthly update on what to look out for in the ... along with many of our solar system’s planets.