Our solar system consists of our star, the Sun, and everything bound to it by gravity – the planets Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune; dwarf planets such as …

A planet is a celestial body that (a) is in orbit around the Sun, (b) has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly …

Jan 9, 2025 · NASA’s real-time science encyclopedia of deep space exploration. Our scientists and far-ranging robots explore the wild frontiers of our solar system.

Jan 9, 2025 · NASA’s real-time science encyclopedia of deep space exploration. Our scientists and far-ranging robots explore the wild frontiers of our solar system.

Apr 6, 2015 · NASA is exploring our solar system and beyond to understand the workings of the universe, searching for water and life among the stars. Earth isn't the only ocean world in our …

Oct 24, 2024 · Have you heard the scary noises from across our universe before? Using data from our spacecraft, scientists gathered sinister sounds from the depths of space. Listen to our …

theory about the beginnings of the sun and planets. This theory explains that our solar system began as a spinning cloud of gas and dust about 4.5 billion years ago.

NASA’s real-time science encyclopedia of deep space exploration. Our scientists and far-ranging robots explore the wild frontiers of our solar system.

planets, but also the distances between them. Planets are tiny worlds in a vast space. In October 2001, the Voyage Scale Model Solar System opened in Washington, DC, displaying a one to …

Cosmologists believe that the universe was created about 15 billion years ago with the "big bang," a cosmic explosion which resulted in an expanding cloud of the two lightest elements -- the …