Jonathan McDowell is retiring from studying the universe. But he’s ramping up efforts to chronicle humanity’s exploration of ...

The 23 satellites from the Starlink company, owned by SpaceX, will be heading to low-Earth orbit to join the thousands already there. Once deployed and in their orbit, they will provide internet ...

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to ...