Little is known about the long-destroyed moon-forming planet, Theia. But it may have been born in the inner solar system—just like Earth—a new study suggests ...

Deep within Earth’s mantle, scientists have uncovered surprising evidence that traces of the planet’s early form,proto-Earth, ...

It’s one of the most enduring ideas about the formation of our solar system: Earth collided with a Mars-sized object, Theia, ...

In an exciting breakthrough for astronomy and the search for extraterrestrial life, a team of international scientists has announced the discovery of Gliese 12 b, a temperate, Earth-sized exoplanet ...

An international team has made a significant breakthrough in understanding the tectonic evolution of terrestrial planets.

Shorty after 4 p.m. ET today (June 27), the mountain-size asteroid 2011 UL21 will come within 5 million miles of Earth, making it one of the largest space rocks to come that close to our planet for ...

The article highlights the paradox of widespread belief in the abundance of life in the universe juxtaposed with humanity's singular known example on a planet facing rapid climate change. It ...

Scientists using NASA's Transiting Exoplanet Survey Satellite (TESS) discovered an exoplanet, which NASA defines as “any planet beyond our solar system.” What's False However, the “strange signals” ...

A lone man walks across an expanse of ice; a mottled tundra; desert badlands. The single human figure becomes a focal point as images from Earth’s diverse ecosystems change underfoot. In this visual ...