NASA to Launch Newest Mars Explorer to Seek Signs of Life

The United States is preparing to return to the planet Mars. The U.S. space agency NASA plans to have a spacecraft, called Perseverance, deploy a rover on the planet's surface. The vehicle has been called the brainiest Martian rover yet. NASA officials say its mission will be to search for signs of life on the Red Planet.

This will be the space agency's fifth rover to explore Mars. The first, named Sojourner, was sent in 1997. Then came Spirit and Opportunity, which landed in 2004. The fourth rover, Curiosity, has been exploring the planet since 2012.

The missions have resulted in valuable information. The vehicles helped gather data showing Mars was not always the cold and empty place it is today. Experiments provided evidence that at one time, the planet held several chemical elements that may have supported life. These included running water, organic molecules, and a more favorable climate.

新闻来源：VOA