Mercury is tiny, barely bigger than the Moon. Its metallic core makes up 70% of the planet’s mass, vastly exceeding Earth’s 32% and Mars ’ 25%. It’s unlikely that the core actually formed like this.

A long-exposure image taken from Cerro Pachón captures the luminous road connecting two of Chile's most important astronomical sites.

Cosmic dust, it turns out, isn’t made of miniature rocks. It’s fluff. A comprehensive analysis of data from space missions, advanced computer simulations, and innovative laboratory experiments argues ...

For nearly two decades Enceladus, a 500-kilometer-wide moon of Saturn, has been a top target in the hunt for extraterrestrial life. In 2005, shortly after arriving in orbit around the ringed planet, ...

Floating high above Earth's atmosphere, the Hubble Space Telescope has captured some of the most breathtaking images ever seen — galaxies colliding, stars being born, and nebulae glowing in cosmic ...

Astrology paints zodiac signs as mystical, but astronomy tells another story. This video uncovers the real science behind the zodiac, from shifting constellations to the movement of Earth in space.

From thrilling breakthroughs to alarming problems, astronomy is full of surprises. This video reveals six good and bad updates that are reshaping how we see the universe.

The James Webb Space Telescope has uncovered dazzling newborn stars and thick cosmic dust in Sagittarius B2, the Milky Way's most enormous star-forming cloud.

Explore the universe with multi-messenger astronomy, combining light, gravitational waves, neutrinos, and cosmic rays for a complete view.

Massachusetts Institute of Technology expands one of the largest public-private partnerships in science, strengthening U.S. leadership in astronomy and engineeringPASADENA, Calif. and CAMBRIDGE, Mass.

In May 1964, Arno Penzias and Robert Wilson were testing how radio waves bounced off balloon satellites developed by Bell Telephone Laboratories. But they kept getting an unpleasant hissing noise, in ...

Today, we stand on sacred ground, not only for its pristine, radio-quiet skies, but for its role in uniting nations to explore the mysteries of the universe,” Nzimande said.