Pinpointing a Milepost Marker Star that Opened the Realm of Galaxies At the dawn of the 20th century, astronomers faced a ...

In 1920, astronomers Harlow Shapley and Heber Curtis held a Great Debate. Shapley argued that the spiral nebulae were small and in the Milky Way, while Curtis took a more radical position that they ...

Astronomers recorded extreme winds of 33,000 kph on exoplanet WASP-127b, a 'hot Jupiter' with low density orbiting close to its star. Advanced atmosph ...

Scientists think a small rock discovered near Earth last August was hurled into space by an ancient impact on the lunar surface.

Continent-size islands deep inside Earth's mantle could be more than a billion years old, a new study finds.

The so-called 'planetesimal belts' are filled with tiny millimeter-sized particles created by collisions between comets.

The article highlights the key differences between seas and oceans, including their geographical locations, depths, volumes, ...

The orbits of Jupiter, Saturn, Uranus and Neptune may have been forever changed by an enormous object that whizzed through ...

Their existence contradicts the common assertion the Earth’s mantle is well-mixed, suggesting our models are wrong.

For many, environmental ethics is about minimizing negative impacts, but this can be challenging in a society that ...

Mars' unique topography, with low-lying northern plains and elevated southern highlands, is linked to internal magnetic ...

Mars has northern and southern hemispheres like Earth, but their defining characteristics are markedly different, a ...