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

Twins are the focus of the organization’s primary effort — a proposed series of three missions to send stem cells from twins ...

A carrier rocket and a spacecraft are always on standby on the ground to rescue astronauts aboard the Chinese space station.

Want to go to Mars? Just ace your March Madness bracket - Don’t get your hopes up too high. The odds of submitting a perfect ...