SpaceX sent a Falcon rocket soaring toward orbit Monday night with 11 small satellites, its first mission since an accident last summer. Then in an even more astounding feat, it landed the 15-story leftover booster back on Earth safely.
Be amazed by the stars
Designer Rachel Habas explores the science of stars.
Strong evidence Mars has streams of salt water in summertime
Mars appears to have flowing streams of salty water, at least in the summer, scientists reported Monday.
Scientists find closest thing yet to Earth-sun twin system
Scientists have identified a “close cousin” to Earth that’s orbiting a sun-like star and might harbor life.