U.K. start-up Pulsar Fusion has unveiled plans to build a fleet of reusable nuclear fusion-powered rockets, known as Sunbirds ...

When young, aspiring astronauts dream about shooting off into space in a rocket ship, their minds rarely wander to worst case ...

In recent months, NASA astronauts who have spent extended periods aboard the International Space Station (ISS) have been under the microscope as scientists continue to study the long-term health ...

A European space telescope launched to explore the dark universe has released a trove of new data on distant galaxies.

Mr. Irving is an investigative journalist who has covered aviation and aerospace for more than 30 years.

Interior Department employees say they have been scrambling to keep the lights on and do their jobs as budget cuts driven by ...

Astrophysicist Paul Sutter talks about the science behind "Three Body Problem," "Interstellar," and "Avengers: Infinity War." ...