In Depth | Mars - NASA Solar System Exploration
Moons Mars has two small moons, Phobos and Deimos , that may be captured asteroids. They're potato-shaped because they have too little mass for gravity to make them spherical.
In Depth | Phobos – NASA Solar System Exploration
Phobos, gouged and nearly shattered by a giant impact crater and beaten by thousands of meteorite impacts, is on a collision course with Mars. Phobos is the larger of Mars' two moons …
In Depth | Moons – NASA Solar System Exploration
Of the terrestrial (rocky) planets of the inner solar system, neither Mercury nor Venus have any moons at all, Earth has one and Mars has its two small moons. In the outer solar system, the …
Mars By the Numbers - NASA Solar System Exploration
2025年1月9日 · Mars is the fourth planet from the Sun, and the seventh largest. It’s the only planet we know of inhabited entirely by robots.
Planet Compare - NASA Solar System Exploration
2025年1月9日 · Mars Click for more Venus Click for more Saturn Click for more Uranus Click for more Neptune Click for more Earth's Moon Stay Connected. Solar System. ... About Moons; …
The Solar System and Beyond is Awash in Water
2015年4月6日 · But our water came from somewhere -- every world in our solar system got its water from the same shared source. So it's worth considering that the next glass of water you …
In Depth | Our Solar System - NASA Solar System Exploration
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 …
In Depth | Jupiter – NASA Solar System Exploration
Jupiter has 80 moons. Fifty-seven moons have been given official names by the International Astronomical Union (IAU). Another 23 moons are awaiting names. Jupiter's four largest moons …
Moons | Science – NASA Solar System Exploration
Cassini looked, listened, sniffed and even tasted Saturn’s moons, and what it learned about them is nothing less than extraordinary. Habitability Outside the Habitability Zone. Haze-enshrouded …
In Depth | Venus – NASA Solar System Exploration
The ancient Romans could easily see seven bright objects in the sky: the Sun, the Moon, and the five brightest planets (Mercury, Venus, Mars, Jupiter, and Saturn). They named the objects …