Many objects in space rotate. Earth completes a spin in roughly 24 hours, while Venus takes a whopping 243 Earth days. The moon's rotational period is about 27 days. The sun, it turns out, also ...

Europa stands out among Jupiter's moons, thanks to its remarkably smooth ice shell, which scientists believe conceals a global ocean of liquid water, perhaps twice as deep as Earth's oceans. In late ...

The curious minds at What If imagine traveling to a hellish planet in another solar system, exploring extreme temperatures, ...

Scientists argue that limiting the search for life strictly to a star’s traditional habitable zone is too restrictive. That is in light of new climate models, and observations that suggest that liquid ...

Astronomers suspect that a massive metallic cloud swirling in a nearby star system could be hiding a giant planet or dwarf ...

Embarking on a spur of the moment astronomy lesson, Musk explained that the sun makes up some 99.8% of mass of the solar system, and that Jupiter, the biggest planet, is just kind of a rounding error ...

Behavior might be chalked up to more than just intentional choices.

Scientists are sharpening the methods used to search for alien artifacts inside our own solar system, drawing on recent ...

Larry Fink, president and CEO of investment firm BlackRock, interviewed Elon Musk, CEO of Tesla and SpaceX at the World ...

Professor Avi Loeb of Harvard cited three reasons 3I/ATLAS might be an alien spacecraft. First, its trajectory is highly ...

Elon Musk marked his last-minute Davos debut on Thursday with a critique of U.S. solar tariffs and aggressive targets for ...

Elon Musk makes first Davos appearance, joins Larry on stage and jokes about aliens, peace deals, and pension funds.