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

Beyond Neptune lies the Kuiper Belt, a vast region of icy bodies that holds the secrets to the solar system ... mysteries ...

When you gaze up at the constellation Hercules, you are looking out the front ... constitute the solar system are so insignificant that we can consider the entire mass a point in space.

Plate tectonics give Earth its mountains, earthquakes, continental drift and maybe even helped give rise to life itself. But do other planets in the solar system have them too?

An objection to this theory has been raised by Moulton, who points out that the ... formed from the earth by solar tidal disruption, this method being abnormal in the system, and the later ...

Dec. 19, 2024 — New studies offer a clearer picture of how the outer solar system ... like Earth's. The explanation: the ice giants are layered ... Ancient Hot Water on Mars Points to Habitable ...

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

The formation of our solar system from a singular nebula raises an intriguing question: why did each planet develop with a ...

They developed a 3D model that simulates how the solar system's orbital architecture may have evolved differently with the formation of a planet that is at least twice the size of Earth's mass—a ...

Ever since the beginning of the Space Age, the inner planets and the Earth-Moon system ... ESA solar mission. Launched in 1995, SOHO is stationed in a halo orbit at Lagrange point L 1 and provides ...

In October 2020, a van-sized robotic spacecraft briefly touched down on the surface of Bennu, a 525-meter-wide asteroid 320 million kilometers from Earth.