Two canyons near the south pole of the moon rival the Grand Canyon, both in depth and length. Unlike the sinuous chasm in Arizona, the two lunar canyons, known as Vallis Schrödinger and Vallis Planck, are straight, as if the crust of the moon had been cut by a knife. And unlike the Grand Canyon,…
Since 1978, every new group of NASA astronauts has included women and usually reflected a multiplicity of races and ethnicities. That is not simply by chance. NASA’s process for selecting its astronauts is not entirely gender- and race-blind. With so many outstanding applicants, choosing a diversified, highly qualified group of candidates has been achievable, said…
You may hear about a large asteroid headed toward Earth. Don’t panic. Just after Christmas Day, astronomers spotted something zipping away from Earth: a rock somewhere between 130 feet and 330 feet long that they named 2024 YR4. Over the next few weeks, they simulated its possible future orbits. They now say, based on the…
Our solar system contains planets, dwarf planets, asteroids and comets — but only one world is known to harbor life. Scientists have long debated whether Earth is truly unique. Perhaps our planet just happened to have the right combination of ingredients, conditions and timing to allow life to emerge. But a pinch of grit from…
In a post on X on Tuesday evening, Elon Musk said President Trump had asked his rocket company SpaceX to bring home “as soon as possible” two NASA astronauts who have been on the International Space Station since June. SpaceX, in fact, is already scheduled to bring those two astronauts home, but no earlier than…
In a post on X on Tuesday evening, Elon Musk said President Trump had asked his rocket company SpaceX to bring home “as soon as possible” two NASA astronauts who have been on the International Space Station since June. SpaceX, in fact, is already scheduled to bring those two astronauts home, but no earlier than…
For a few months last fall, a school-bus-size space rock named 2024 PT5 gained fame as Earth’s new “mini-moon.” Astronomers rushed to study the object while it was still close enough to Earth to observe in detail. Now, one team has concluded that 2024 PT5 is a chunk of the real moon. The rock was…
During his Inaugural Address on Monday, President Donald J. Trump again promised to launch American astronauts to Mars. Seated nearby, Elon Musk, a political benefactor of Mr. Trump who founded SpaceX in the hope that it would one day be able to send colonists to Mars, beamed with enthusiasm and offered two thumbs up. The…
The seventh test flight of SpaceX’s Starship rocket failed on Thursday as the vehicle’s upper stage suffered a catastrophic malfunction, disappearing as it headed upward to space. SpaceX was able to achieve some success by repeating the feat of catching the gargantuan Super Heavy booster back at the launchpad. But data indicated that some of…
A couple in Canada were returning home from walking their dogs some months ago when they found a burst of dusty debris on their walkway. They turned to their security-camera footage for answers and found it showed a mysterious puff of smoke appearing on the tidy walkway where the mystery splotch was. The source of…