Perhaps the greatest tool astronomers have is the ability to look backward in time. Since starlight takes time to reach us, ...

Researchers simulated the sun’s polar vortices using computer models, which suggest the vortices are likely driven by ...

The Sun is about 100 times wider than the Earth and the Earth could fit into the Sun over one million times. It would take 500 years for the fastest person on Earth to run the distance from the ...

Beyond Neptune lies the Kuiper Belt, a vast region of icy bodies that holds the secrets to the solar system’s formation.

A new study suggests that extreme temperatures could lead to a mass extinction event, ending the reign of humans and mammals ...

Like the Earth, the sun likely has swirling polar vortices, according to new research led by the U.S. National Science ...

“The new model shows that if the conditions ... Earth-like exoplanets (planets orbiting stars other than our sun) with oceans, lakes and rivers are thought to be unlikely, but the work reveals ...

An inner planet to Earth—so closer to the sun—it completes just over four ... go backward proves that the revolutionary heliocentric model of Nicolaus Copernicus in 1543 was correct.

Vega provided the first telescopic evidence of a disk of planet-forming material, but there are no planets to be found around ...

By the end of this period of rich discovery and mathematics, we had a new model for the heavens. The planetary movement we ...

Why does Jupiter look like it has a surface – even though it doesn’t have one? – Sejal, age 7, Bangalore, India ...