Astronomers observe for the first time the actual motion of spirals in a protoplanetary disk, revealing gravitational ...

Astronomers have discovered an alien world that defies every planetary rule with its massive size, low density, and tilted ...

Context. As a star evolves, the planet orbits change with time due to tidal interactions, stellar mass losses, friction and gravitational drag forces, mass accretion and evaporation on/by the planet.

Astronomers using NASA’s Hubble Space Telescope have measured the rotation rate of an extreme exoplanet by observing the varied brightness in its atmosphere. This is the first measurement of the ...

If you think you've met the wildest exoplanet yet, you haven't learned about TOI-4507 b. This strange world breaks almost ...

Scientists have confirmed the existence of over 6,100 planets beyond the Solar System in the Milky Way. Something that has ...

James is a published author with multiple pop-history and science books to his name. He specializes in history, space, strange science, and anything out of the ordinary.View full profile James is a ...

A planet's year length depends on its distance from the Sun. Planets closer to the Sun have shorter years. A planet's rotation speed is unrelated to its year length. Planets' orbital speeds vary ...

Using new data from NASA’s Cassini spacecraft, researchers believe they have solved a longstanding mystery of solar system science: the length of a day on Saturn. It’s 10 hours, 33 minutes and 38 ...

Venus is often known as Earth’s twin because it is the closest planet to Earth in size, mass, and composition. Both are rocky ...