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 …

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.

The Sun is the largest object in our solar system. Its diameter is about 865,000 miles (1.4 million kilometers). Its gravity holds the solar system together, keeping everything from the biggest …

comets may exist in a huge cloud surrounding our solar system. 1951 — Astronomer Gerard Kuiper predicts the existence of a belt of icy objects just beyond the orbit of Neptune.

The first confirmed object from another star to visit our solar system, this interstellar interloper appears to be a rocky, cigar-shaped object with a somewhat reddish hue. The object, named …

The Kuiper Belt is a large region in the cold, outer reaches of our solar system beyond the orbit of Neptune. It's sometimes called the "third zone" of the solar system. Astronomers think there …

Dec 6, 2018 · In our solar system, we have unique names for many of the worlds we study. Planets...asteroids and comets...dwarf planets...a star. But what about those things we don't …

Our solar system’s small bodies – asteroids, comets, and meteors – pack big surprises. These chunks of rock, ice, and metal are leftovers from the formation of our solar system 4.6 billion …

tances of objects in the Solar System? Concepts Students will learn the following concepts: Models are powerful tools of exploration. The sizes of the planets and distances between the …

I study Solar System objects with very tenuous atmospheres, also called exospheres. I use a combination of spectroscopic observations (from the ground as well as from space, from the …