This hypothesis is in excellent agreement with observations made by the Cosmic Origin Spectrograph on board the Hubble Space Telescope.

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

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.

Have you ever wondered what it would be like to travel to outer space – and then keep going? What would you find?

Provides insight into the formation and evolution of asteroids, icy moons and Earth-like rocky planets in the early history of the universe.

A team of Canadian astronomers have used the James Webb Telescope (JWST) to identify the most distant globular clusters ever discovered.

Right above you is the sky – or as scientists would call it, the atmosphere. It extends about 20 miles (32 kilometers) above the Earth.

In the last 25 years, astronomers have found thousands of exoplanets around stars in our galaxy, but more than 99% of them orbit small stars

Some cosmological models propose that the universe expands and contracts in infinite cycles, but new research finds a crucial flaw

Experts who are known for debunking black hole discoveries have found a dormant stellar-mass black hole in the Large Magellanic Cloud

According to this scenario, life on Earth was originally based on RNA only, and DNA and protein enzymes evolved later.

Newly discovered black holes in dwarf galaxies shed light on the origin of our galaxy's central supermassive black hole.

The Andromeda galaxy, our Milky Way's closest neighbor, is the most distant object in the sky that you can see with your unaided eye.

A unique new instrument, coupled with a powerful telescope and a little help from nature, enables scientists to peer into galactic nurseries

As astronomers look out at the distant cosmos, it’s only natural that they would also look inward, to the center of our own Milky Way.

Astronomers have been able to identify the widest range of elements in a relatively bright star beyond our solar system yet.

Signs of a planet transiting a star outside of the Milky Way galaxy may have been detected for the first time.

The larger the mirror, the more light is collected. This means that we can see farther back in time to observe star and galaxy formation.