A planet roughly the size of Neptune has stunned astronomers by orbiting its star in the opposite direction of the star’s ...

Dead satellites and drift-prone GPS coordinates aren’t your phone’s fault — they’re side effects of something unprecedented happening to our planet. Climate change is slowing Earth’s rotation at the ...

At the right point of the orbit and stellar cycle, the star’s chromosphere brightens.

Using the Keck Observatory, astronomers measured the spins of dozens of giant planets and brown dwarfs orbiting distant stars. They found that giant planets can spin faster than much more massive ...

Scientists announced Monday that Earth is rotating slightly faster than normal, resulting in what is expected to become the second-shortest day ever recorded since precise atomic timekeeping began.

In the cold, dark outskirts of planetary systems far beyond the reach of the known planets, mysterious gas giants and planetary masses silently orbit their stars—sometimes thousands of astronomical ...

The same happens when they're annihilated. The temperature increase is due to how much dark matter enters the planet, and the energy that's input can also accelerate the planet's rotation period.

The classical picture of star and planet formation suggests that a star’s rotational axis and the orbital planes of its planets should be aligned. However, exoplanetary systems have considerable ...

Did you know that the concept of a planet with two suns has intrigued astronomers and the public for decades? Well, it’s primarily because of its spectacular sunsets. A binary star system, consisting ...

Right angle Illustration of 2M1510 showing the orbits of the two brown dwarfs (in blue) and that of the planet (in orange). (Courtesy: ESO/L Calçada) The first strong evidence for an exoplanet with an ...

Earth’s rotation is slowing as melting ice moves across the planet. New research says it’s driven by climate change and is ...