We may receive a commission on purchases made from links. We got to share in a rare moment of collective awe this week as four astronauts blasted off toward the moon, beginning a 10-day journey that ...

These ideas for prioritizing space—both physical and temporal—for science can help teachers give the subject the attention it deserves.

What if our biggest idea about reality is built on a hidden misunderstanding? A new philosophical look at space-time challenges the popular view that the past, present, and future all exist together ...