Capybaras: the chillest guys on planet Earth.

How can you determine the weight of the planet you stand on?

It turned out to be far closer to America than many ever thought.

It may still be possible to understand what happened, even when our science reaches its limit.

All the biggest science news stories of the week.

The Swift Observatory has a 90 percent chance of crashing to Earth by 2027.

Sometimes in space you have to go backwards to go forwards.

Following its success with the second launch, Blue Origin plans to go bigger.