Mars is half the size of Earth and has only a tenth of its mass, but a new study shows that even such a "lightweight" planet ...

China has quietly taken a decisive step in the new space race by building what it calls the first software system capable of keeping clocks on Earth and on the Moon in sync. The tool is designed to ...

Researchers from the Purple Mountain Observatory in China released LTE440, short for Lunar Time Ephemeris, in a recently ...

In a blow to anyone dreaming that complex life may exist elsewhere in the universe, a new study suggests we're unlikely to ...

When the NASA Ice, Cloud, and land Elevation Satellite-2 launched in late 2018, it brought high-resolution data to a new ...

New calculations reported by Live Science indicate Jupiter was once much larger and is still contracting as it cools, offering constraints on early solar system conditions.

Earth may owe some of its properties to a nearby star that blew up just as the solar system was forming. This pattern, which saw a supernova bubble envelop the sun and shower it with cosmic rays, may ...

The interstellar comet 3I/ATLAS will make its closest approach to Earth on Dec. 19. Originating from outside our solar system, the comet is not a threat to Earth. While not visible to the naked eye, ...

New research suggests that Theia, the object whose collision with Earth is theorized to have caused the formation of the moon, came from closer to the sun. Artist’s impression of the collision between ...

Scientists have identified three Earth-sized planets orbiting two stars in the TOI-2267 system. Remarkably, planets transit around both stars — a first in astronomy. The system’s compact, cold nature ...

If you've ever wondered why we are here, then you can thank Jupiter for part of the answer. A new study from Rice University suggests that if it weren't for the gas giant, the Earth would have ...