Space has a knack for bending our sense of scale. The Moon feels close enough to touch—after all, we see its craters with ...

Saturn stunned skywatchers on 23 November when its iconic rings seemed to vanish, leaving the planet looking strangely bare.

The idea of artificially lowering the planet’s temperature is gaining supporters and hitting political opposition.

Theia, the world that helped form the Moon, came from the Solar System. Chemical clues in Earth and Moon rocks reveal this ...

The night sky will show a rare alignment of planets in the night sky, with Venus and Mercury visible the morning of Tuesday, Nov. 25.

What happens when a planet contains immense quantities of water but is far too hot for that water to remain liquid?

Mysterious interstellar object 3I/ATLAS could be passing by Jupiter to "seed" the planet with "technological devices." ...

If we find technological satellites of Jupiter that we did not send, it would imply that Jupiter is of interest to an ...

Scientists clarified that, if considering the comet’s trajectory relative to the Sun, it is already on its way out of the solar system while still approaching our planet ...

Scientists traced the Moon's parent planet Theia to the inner Solar System, solving a 4.5-billion-year mystery.

About 4.5 billion years ago, a colossal impact between the young Earth and a mysterious planetary body called Theia changed everything—reshaping Earth, forming the Moon, and scattering clues across ...

The asteroid, known as 2022 RD2, belongs to a rare class of space rocks called Arjunas. These objects travel around the sun ...