The exact number of solar systems is not known. According to NASA, there are more than 100 billion galaxies within the universe. One of these galaxies is the Milky Way galaxy, wher...
The Solar System
From our small world we have gazed upon the cosmic ocean for thousands of years. Ancient astronomers observed points of light that appeared to move among the stars...
The Solar System refers to the Sun and the planetary system that orbits it, either
directly or indirectly. Of those objects that orbit the Sun directly, the largest eight ...
More Moons. Regions. Our Solar System. Kuiper Belt. Oort Cloud. Beyond Our
Solar System. Stars. Sun. Compare the Planets · What Is a Planet? ABOUT US; |
means dealing with the sun , Sol. That includes eight planets as well as some smaller objects such as asteroids , comets and meteoroids . Previously, we had considered one of those smaller objects to be a ninth planet, but last year, the International As... More »
Part of NASA's Office of Space Science that describes NASA's program to explore
the solar system.
Our solar system consists of a star we call the Sun, the planets Mercury, Venus,
Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto; the satellites of the ...
Our solar neighborhood is an exciting place. The Solar System is full of planets,
moons, asteroids, comets, minor planets, and many other exciting objects. Learn
Get information, facts, photos, news, videos, and more about our solar system
from National Geographic.
Online 3D simulation of the Solar System and night sky in real time - the Sun,
planets, dwarf planets, comets, stars and constellations.