Measuring The Rotation of an Extrasolar PlanetAstronomers using NASA’s Hubble Space Telescope have measured the rotation rate of an extreme exoplanet by observing the varied brightness in its ...

In a recent study published in The Astrophysical Journal, astronomers have introduced a groundbreaking method to map the ...

Earth is the planet we have the best opportunity to understand in detail—helping us see how other rocky planets behave, even ...

Today, let's talk about those massive planets in the universe. Have you ever wondered why giant planets rotate so quickly?

As for the other two planets, the team was able to constrain the spin of HR 8799 c to an upper limit of less than 14 km/s; planet b’s rotation measurement was inconclusive.

A singular rotation of Venus takes 243 days on Earth, according to NASA. Farther out in the solar system is another oddball planet, Uranus, which spins on its side.

The textbook picture of how planets form – serene, flat discs of cosmic dust – has just received a significant cosmic twist.

This is how long a year is on other planets in our solar system, beginning with Mercury at about 176 Earth days to complete its orbit.