The multi-day rehearsal is the final step as NASA readies its gigantic Moon rocket for a possible launch in June.
Concerns have been raised that NASA might inadvertently disclose information that helps an adversary build ballistic missiles.
The European Space Agency is looking for another way to get the rover to Mars after it cut ties with Roscosmos.
The new strategy calls for an extra launch to the Red Planet and a delivery date of the precious samples no earlier than 2033.
Artemis astronauts will require sophisticated vehicles to support their lunar expeditions.
With the Space Launch System rollout complete, NASA will begin preparations for a critical rehearsal.
The Mars mission was supposed to launch this year, but the collaborative project is now on hold.
Live coverage of the historic rollout begins at 5:00 p.m. EDT (2:00 p.m. PDT).
The 322-foot-tall rocket will begin its 4-mile journey to the launch pad on Thursday, March 17.
Like William Shatner before him, Davidson won’t have to pay for his seat to the edge of space.
A full-scale, fully functional lunar rover prototype recently drove near Death Valley.
Kelly called out Roscosmos chief Dmitry Rogozin on Twitter, adding further strain to the longstanding International Space Station partnership.
Unwanted rocks won't leave NASA's six-wheeled rover alone.
The already-delayed Russian-European Mars mission now faces even more uncertainty.
Dmitry Rogozin said those who create sanctions should be checked for Alzheimer’s.
NASA replaced an engine controller aboard the gigantic Space Launch System rocket after a glitch late last year.
The missions, collectively known as the Polaris Program, will attempt the highest Earth orbit ever flown and the first fully commercial spacewalk.
It's a cosmic case of mistaken identity, and we can thank a NASA scientist for noticing that the Moon-bound booster wasn't from a SpaceX Falcon 9 rocket.
SpaceX lost 40 satellites after a geomagnetic storm prevented them from rising to their operational orbits.
SpaceX says its satellites will disintegrate upon atmospheric reentry and won't pose a risk to other space-based equipment.
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