Our Solar System has eight planets, a few dwarf planets and more than 200 moons. But wait. Are you seeing double? Or did ...

As far-fetched as it may seem, quirks of orbital mechanics could allow hundreds of planets to be packed around a star ...

You can be moving at extraordinary speed and still feel completely stationary. The reason comes down to the difference between velocity and the changes in motion your body can actually detect.

The fate of our solar system is written in the stars—well, one star to be precise: the sun. Estimates of what the end will ...

When 'Oumuamua traversed our solar system in 2017 it was the first confirmed Interstellar Object (ISO) to do so. Then in 2019, Comet 2l/Borisov did the same thing. These are the only two confirmed ...

Oh, we humans do love a cleanly defined boundary, don’t we? They make things easier, after all. If we’re trying to categorize something, knowing what labeled bin to put it in is handy. If we’re ...

The Sun’s death is not an event the planets will quietly survive—it is the trigger for their orbital undoing.” ...

Spiral Galaxy from Kirkland et al. CREDIT Chris Kirkland and colleagues. A new study of zircon crystals from two of Earth’s oldest continents indicates that the formation of Earth’s continental crust ...

And the earth was without form and void, and darkness was upon the face of the deep. Sometimes, if the night is dark and clear enough, you can look up and see the Milky Way in its arc across the sky.

Leaving the Solar System in minutes is a fantasy, but the idea opens a larger question about how humanity could ever reach ...

Mercury, the solar system’s smallest planet and the one closest to the sun, hasn’t received as much love as its celestial neighbors. It’s the least explored of the inner solar system planets, which ...

The materials that form the building blocks of life on Earth have been found in distant planet-forming discs that are the ...