In fact, on the evening of March 15, Mercury's brightness will have dropped to magnitude +1.6; as bright as the star Castor in Gemini and only 1/11 as bright as it is now. In telescopes it will ...

Now, though, NASA and SpaceX have delayed the launch of Crew-6 to Monday, February 27, at 1:45 a.m. ET. The delay follows a rather lengthy flight readiness review on February 21, which saw NASA ...

Minutes before it was scheduled to launch, the first commercial mission of Europe's new heavy-lift rocket Ariane 6 was called ...