A new model of the whole Earth shows how the mantle and crust drive the movement of tectonic plates as well as the creation and destruction of supercontinents.
Sending scientific instruments to the edge of the heliosphere, or the sun's region of influence, is like going to the edge of the fish bowl.
In my long career as an assiduous amateur astronomer, I've seen other transits of Mercury, but one from November 1973 stands out.
Mathematicians have uncovered a big new piece of evidence for one of the most famous unproven ideas in mathematics, known as the twin prime conjecture.
A forthcoming virtual reality experience aims to bring more people into the International Space Station, in a way.
The brightest X-ray burst ever observed by NICER released as much energy in 20 seconds as our sun does in about 10 days.
India has launched just three planetary-science spacecraft, but the country is already eyeing a new destination: Venus.
It's a long way down as a rocket and its fairing part ways during a launch. An incredible video shows that journey for the nose cone SpaceX will reuse during its next Falcon 9 launch.
If you want to watch the Mercury transit on Monday (Nov. 11) but don't have the proper equipment, you can still find a viewing event near you. Here's how.
When Mercury passes in front of the sun on Monday, you'll need the right equipment to see it safely. But if you don't have that kind of astronomy gear handy, you can also watch it live online.
Boeing's astronaut taxi remains on track for a December demonstration flight to the International Space Station after passing a key safety test earlier this week.
A rogue artificial intelligence ruthlessly seeks to get smarter in a new television thriller premiering on the Fox network in 2020.
A brand-new particle has possibly emerged and is altering the future destiny of our entire cosmos, a physicist says.
Here's a guide to SpaceX's launch schedule, other rocket missions, astronomical events of the next year, as well as milestones for spacecraft already in travel.
Among the dozens of spacecraft that have visited the moon, none can come close to the tenure of NASA's Lunar Reconnaissance Orbiter, which recently marked a decade studying our sibling world.
A new study shows how microgravity alters human heart muscle cells in space, helping astronauts better prepare for long-duration missions to Mars and beyond.
NASA has opened one of its last pristine samples of Apollo moon rock to prepare for the return of new material by future lunar missions.
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