SpaceX Said to Fire Employees Involved in Letter Rebuking Elon Musk

In an email, Gwynne Shotwell, SpaceX’s president, said the letter had made other employees “feel uncomfortable,…

SpaceX Workers Raise Concerns About Elon Musk’s Tweets

The employees said that the chief executive’s behavior online was “a frequent source of distraction and…

How to Wash Your Hair in Space

Water is limited. If globules escape, gently scoop them back to your head. Click…

SpaceX Wins FAA Approval for Launch of Starship Mars Rocket

The Federal Aviation Administration placed conditions on the flights, but ruled that a more extensive environmental…

As the Large Hadron Collider Revs Up, Physicists’ Hopes Soar

The particle collider at CERN will soon restart. “There could be a revolution coming,” scientists say. …

Valery Ryumin, Who Set Endurance Record in Space, Dies at 82

A Soviet cosmonaut, he spent 362 days in flight on three missions. He returned 18 years…

NASA Plans to Join U.F.O. Research Efforts

The truth is out there, and now America’s space agency will add its resources to the…

Asteroid Samples May ‘Rewrite the Chemistry of the Solar System’

The flecks of rock were brought back to Earth by the Japanese space mission Hayabusa2 in…

Elon Musk Tells Tesla and SpaceX Workers to Return to Office 40 Hours a Week

In emails to workers at SpaceX and Tesla, Mr. Musk said they were required to spend…

Pale Blue, Deep Blue: How Uranus and Neptune Get Their Colors

While the giant, icy worlds are similar in many ways, a thinner, more active haze makes…