The International Space Station is marking 25 years of nonstop human presence in orbit. Nearly 300 people have lived aboard ...

A supersonic jet plane designed to make very little noise took flight for the first time this week, cruising over the ...

While most scientists believe it’s a natural comet, one Harvard astronomer has suggested its unusual features could hint at ...

SpaceX writes that the next-generation Artemis Moon missions are about laying the foundation for building a permanent ...