Belief that Musk can get six boosters to successfully refuel the moon-bound spacecraft has a reader wondering who has been ...

Astronomers have identified a frozen, Earth-sized world circling a nearby sunlike star, a find that sharpens the search for planets that resemble our own while underscoring how rare truly temperate ...

Elon Musk vowed this past week to upend another industry just as he did with cars and rockets -- and once again he's taking on long odds.

Ars has reported on one of the amendments, which would authorize NASA to take steps toward a “commercial” deep space program ...

Elon Musk has vowed to disrupt another industry, following his ventures in cars and rockets, by proposing an ambitious ...

Satellites and spacecraft in the vast region between Earth and the moon and just beyond—called cislunar space—are crucial for ...

Several robotic spacecraft orbiting the Moon can take detailed pictures of its surface, so why send people around the Moon? A ...