A new theory for how rocky planets form could explain the origin of so-called "super-Earths"—a class of Earth-like exoplanets.

Above the atmosphere is space. It’s called that because it has far fewer molecules, with lots of empty space between them.

Astrophysicists say that there is a clear, unambiguous signal in the cosmos which could eliminate inflation as a possibility.

For the first time, astronomers have spotted an exoplanet whose orbit is decaying around an evolved, or older, host star.

An Earth-like planet orbiting an M dwarf star discovery could cause a major shift in the search for life on other planets.

New measurements show that the light emitted by stars outside our galaxy is two to three times brighter than the light from known galaxies.

Dark matter could be made up of ultralight dark photons that heated up our universe: this is a new scenario proposed in a recent study.

A new map of the universe displays for the first time the span of the entire known cosmos with pinpoint accuracy and sweeping beauty.

Astrophysicists say that there is a clear, unambiguous signal in the cosmos which could eliminate inflation as a possibility.

The black hole’s gravity, which exists in three dimensions, mathematically connects to the particles dancing above it, which exist in 2D.

An Earth-like planet orbiting an M dwarf — the most common type of star in the universe — appears to have no atmosphere at all.

An unrecognized effect boosts or diminishes the Pacific cold tongue, likely impacting El Niño/La Niña events and North American weather