Mars | Facts, Surface, Moons, Temperature, & Atmosphere
2 天之前 · The characteristic temperature on Mars in the lower atmosphere is about 200 kelvins (K; −100 °F, −70 °C), which is generally colder than the average daytime surface temperature …
Mars - Craters, Valleys, Plains | Britannica
2 天之前 · One of the most striking aspects of the Martian surface is the contrast between the southern and northern hemispheres. Most of the southern hemisphere is high-standing and …
Mars - Wikipedia
Mars is the fourth planet from the Sun. The surface of Mars is orange-red because it is covered in iron(III) oxide dust, giving it the nickname "the Red Planet". [22] [23] Mars is among the …
All About Mars | NASA Space Place – NASA Science for Kids
2025年1月14日 · Structure and Surface. Mars is a terrestrial planet. It is small and rocky. Mars has a thin atmosphere. Mars has an active atmosphere, but the surface of the planet is not …
Explore the Red Planet: All the Must-Know Facts About Mars
3 天之前 · Mars surface. Mars' surface is primarily composed of basalt. The prevalence of iron oxide in the Martian soil gives the planet its distinct red color. The Red Planet has many …
Mars Trek - NASA
Mars Trek Trek is a NASA web-based portal for exploration of Mars. This portal showcases data collected by NASA at various landing sites and features an easy-to-use browsing tool that …
In Depth | Mars – NASA Solar System Exploration
With a radius of 2,106 miles (3,390 kilometers), Mars is about half the size of Earth. If Earth were the size of a nickel, Mars would be about as big as a raspberry. From an average distance of …
Mars Fact Sheet - NSSDCA
2024年10月3日 · Surface pressure: 6.36 mb at mean radius (variable from 4.0 to 8.7 mb depending on season) [6.9 mb to 9 mb (Viking 1 Lander site)] Surface density: ~0.020 kg/m 3 …
Overview | Mars – NASA Solar System Exploration
Mars is one of the most explored bodies in our solar system, and it's the only planet where we've sent rovers to roam the alien landscape. NASA currently has two rovers ( Curiosity and …
Mars | Glenn Research Center | NASA
2023年11月20日 · Mars is the fourth planet from the Sun and orbits the Sun at an average distance of approximately 141 million miles (225 million km). It rotates on its axis, completing …