The galaxy is unusually dim and appears to be held together by invisible mass—dark matter. The U.S. and China are each planning to land in the Moon’s Shackleton crater this year. Whoever gets there ...

Breaking space news, the latest updates on rocket launches, skywatching events and more! You are now subscribed Your newsletter sign-up was successful Want to add more newsletters? Breaking space news ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Breaking space news, the latest updates on rocket launches, skywatching events and more! You are ...