Mars | Facts, Surface, Moons, Temperature, & Atmosphere
3 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 of 250 K (−10 °F, −20 °C). In the summer daytime temperatures can peak at about 290 K …
Mars - Craters, Valleys, Plains | Britannica
3 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 heavily cratered, resembling the battered highlands of the Moon. Most of the northern hemisphere is low-lying and sparsely cratered.
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 brightest objects in Earth's sky, and its high-contrast albedo features have made it a common subject for telescope viewing.
NASA Sets Sights on Mars Terrain with Revolutionary Tire Tech
2 天之前 · As Mars has an uneven, rocky surface, durable tires are essential for mobility. Shape memory alloy (SMA) spring tires help make that possible. Shape memory alloys are metals that can return to their original shape after being bent, stretched, heated, and cooled. NASA has used them for decades, but applying this technology to tires is a fairly ...
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 active. Its volcanoes are dead. Time on Mars. One day on Mars lasts 24.6 hours. It is just a little longer than a day on Earth. One year on Mars is 687 Earth days.
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 142 million miles (228 million kilometers), Mars is 1.5 astronomical units away from the Sun.
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 provides layering and viewing of high resolution data.
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 Scale height: 11.1 km Total mass of atmosphere: ~2.5 x 10 16 kg Average temperature: ~210 K (-63 C) Diurnal temperature range: 184 K to 242 K (-89 to -31 C) (Viking 1 Lander site) Wind ...
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 Perseverance ), one lander ( InSight ), and one helicopter ( Ingenuity ) exploring the surface of …
New Interactive Mosaic Uses NASA Imagery to Show Mars in Vivid …
2023年4月5日 · Taken by the veteran spacecraft’s black-and-white Context Camera, or CTX, the images cover nearly 270 square feet (25 square meters) of surface per pixel. That makes the Global CTX Mosaic of Mars the highest-resolution global image of the Red Planet ever created.