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.

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 ...

Neptune may have the most pleasingly shaped analemma of them all: its tilt is 28 degrees, but its orbital eccentricity is very slight, so its analemma is a nearly symmetric figure eight.

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

Astronomers in China have observed a pulsar that becomes partially eclipsed by an orbiting companion star every few hours.

In the remote outer reaches of planetary systems, far beyond the orbit of known planets, enormous and mysterious worlds ...

Modern, type-safe, zero-dependency python library for TLE, CPF, CRD et al. handling and orbit propagation to accurately locate your satellite ...