What is space-time? Depending on how fast you're moving or how close you are do Earth's gravity can change the way time feels ...

The decades-long struggle to keep astronauts healthy in space led to numerous health care advancements here on Earth, a new paper reads.

Large, uncontrolled space junk reentering Earth's atmosphere has the increasing potential to disrupt air travel, if affected airspace is closed as a precaution, according to a new study.

Instead, they are better represented as fields, which are quantum entities that span all of space and time. When a localized patch of the field gets sufficient energy and starts traveling, we ...