Overview
The fourth planet from the Sun, Mars is a dusty, cold, desert world with a very thin atmosphere.
This dynamic planet has seasons, polar ice caps and weather and canyons and extinct volcanoes, evidence it was once an even more active past.
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 three spacecraft in orbit, one rover and one lander on the surface. India and ESA also have spacecraft in orbit above Mars. These robotic explorers have found lots of evidence that Mars was much wetter and warmer, with a thicker atmosphere, billions of years ago. NASA launched the next-generation Perseverance rover to Mars on July 30,2020.
Go farther. Explore Mars In Depth ›
Robots Blaze the Trail for Humans on Mars
NASA's latest robotic mission to the Red Planet, Mars 2020, aims to help future astronauts brave that inhospitable landscape.
While the main science goal of the Perseverance rover is to look for signs of ancient life — it will be the first spacecraft to collect samples of the Martian surface, caching them in tubes that could be returned to Earth on a future mission — the vehicle also includes technology that paves the way for human exploration of Mars.
Robotic explorers, like the Perseverance, have long served as pathfinders to get humans into space, to the Moon and, eventually, the the surface of the Red Planet.
Read More:
- NASA's Perseverance Will Blaze a Trail — for Humans
- NASA's Moon to Mars Strategy
- Artemis 1: The first in a series of increasingly complex missions that will enable human exploration to the Moon and Mars.
Pop Culture
No other planet has captured our collective imagination quite like Mars.
In the late 1800s when people first observed the canal-like features on Mars' surface, many speculated that an intelligent alien species resided there. This led to numerous stories about Martians, some of whom invade Earth, like in the 1938 radio drama, The War of the Worlds. According to an enduring urban legend, many listeners believed the story to be real news coverage of an invasion, causing widespread panic.
Countless stories since have taken place on Mars or explored the possibilities of its Martian inhabitants. Movies like Total Recall (1990 and 2012) take us to a terraformed Mars and a struggling colony running out of air. A Martian colony and Earth have a prickly relationship in The Expanse television series and novels.
And in the 2014 novel and and its 2015 movie adaptation, The Martian, botanist Mark Whatney is stranded alone on the planet and struggles to survive until a rescue mission can retrieve him.