Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. NASA is seeking ...

NASA's beleaguered Mars Sample Return program currently faces extreme costs of up to $11 billion and a timeline that could reach 2040. When you purchase through links on our site, we may earn an ...

NASA aims to return Martian soil and rock samples to Earth in the 2030s, a first-of-its-kind mission. The agency needs another year to finalize the mission plan. Two options are under consideration: a ...

For nearly four years, NASA’s Perseverance rover has journeyed across an unexplored patch of land on Mars—once home to an ancient river delta—and collected a slew of rock samples sealed inside ...