When Earth is opposite Mars from the sun, it will appear full because you’re looking directly on the daylit side. But mitigating this is its far greater distance, plus the fact that Earth appears much ...

What makes 3I/ATLAS especially intriguing is that the comet might be three billion years older than our entire Solar System.

Bringing samples from Mars back to Earth is one of NASA's most ambitious goals. The plan goes back to the 1970s, with NASA's robotic exploration program, when the first spacecraft landed on the ...

Mars is known for its barren desert landscape and dry climate. But two recent studies go beneath the surface: They explore the interior of the red planet using seismic data from NASA's InSight mission ...

Our solar system’s third discovered interstellar visitor, comet 3I/Atlas, will dip into the glare of the Sun this week, leaving the detective work on this object to spacecraft far from Earth.

I/ATLAS, only the third object from beyond our solar system ever spotted from Earth, was viewed from Mars by an orbiting European spacecraft.

This artist’s impression shows multiple small devices soaring on sunlight at the edges of Earth’s atmosphere. Scientists have devised tiny featherweight disks that could float on sunlight in Earth’s ...

"The results reported here can be crucial when down-selecting which samples, if not all, are returned to Earth." ...