Astronomers have yet to find irrefutable proof for any natural satellites of exoplanets—so-called exomoons—but as ...

Uranus and Neptune are the two furthest planets in the Solar System and have been visited only once by human spacecraft – by ...

A low-density, puffy planet orbiting relatively far from a young star in a nearly perpendicular orbit. What's going on?

When NASA’s Artemis astronauts land near the moon’s south pole, they may be stepping into a region that holds vital clues to ...

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

The interstellar object 3I/ATLAS has been something of a mystery ever since it graced our solar system. From all outward ...

Scientists have found that a sample of the moon brought to Earth in 1972 by Apollo 17 astronauts contains a ratio of sulfur ...

Previously undetected organic compounds have been found in ice ejected into space from Enceladus, making the satellite a ...

With the recent discovery of traces of what may or may not be or have been life on Mars, eyes are turning to another world in ...

A natural satellite is simply a celestial object that orbits a planet or a smaller body. Unlike the ones we build and send up ...

A colossal northern asteroid impact billions of years ago likely shaped the Moon’s south polar region and explains its uneven ...