Hycean worlds are also called ocean worlds. They're planets covered in oceans that also have thick hydrogen atmospheres.

As the closest planet to the Sun, Mercury is exposed to the star's enormous gravitational field. And it's really stressful.

With 10 times the mass of our planet, and spending only part of its orbit in the habitable zone, Kepler-725c is very ...

This video explores how climatic shifts, influenced by the Milankovitch cycles—changes in the Earth's axis wobble, tilt, and ...

Earth’s tilt is what causes the seasons; in the summer, when our planet’s pole is tipped toward the sun, the days are longer, ...

On Earth, depending on where you are, the analemma can be at different angles, though it always traces out this figure-of-eight pattern. But on other planets, with their own orbits and mean solar ...

Chinese spacecraft prepare for orbital refueling test as US surveillance sats lurk nearby Two Chinese Shijian satellites ...

Only one of the 20 known asteroids has an orbital eccentricity below 0.38. This makes sense since asteroids with wider orbits come closer to Earth and are easier to detect. So its detection is ...

Only one of the 20 known asteroids has an orbital eccentricity below 0.38 - with 0 being a perfectly circular orbit and 1 meaning an elliptical or oval-shaped orbit. This means some asteroids with ...

A little-known population of asteroids sharing Venus's orbit has intrigued scientists. Their unstable trajectories could ...