From NASA’s Mars landing to billionaires in space, here are some of the top moments in space exploration this year. | Reuters

On January 2, 2004, NASA's Stardust spacecraft flew by comet Wild 2 to collect some comet dust and bring it back to Earth. Discover more space history 👉 https://trib.al/rTUJu3D Stardust was the first robotic sample return mission of its kind. It didn't land on the comet, but it flew close enough to collect dust grain samples from the comet's coma. This is the cloudy region around a comet where evaporating ice and other particles are blown away from the comet's surface, forming the comet's chara

FRIDAY. Follow Space.com’s Chelsea Gohd as she goes to “Mars,” in a new documentary showing the realities of her experiences as an analog astronaut at the HI-SEAS habitat in Hawaii. Here’s a sneak peak from her documentary, which will air on YouTube and Facebook Friday, May 7th, 12:00p EDT (9a PDT / 1600 GMT). | Space.com