As much as 45 oceans’ worth of hydrogen may be in Earth’s core, scientists reported, suggesting most of Earth’s water was acquired during the planet’s formation.

The current image of Mars as an arid and hostile desert contrasts sharply with the history revealed by its surface. Channels, ...

Scientists at the University of Southampton have uncovered evidence from ancient rocks that Earth's climate continued to ...

New research data using NASA’s Juno spacecraft shows Jupiter is slightly smaller and flatter than decades-old estimates.

Humanity’s first successful lunar lander is missing. Sixty years ago the Soviet Luna 9 became the first human-made object to ...

For decades, scientists believed they had a solid handle on Jupiter’s size and shape.

A bizarre fossil called Prototaxites, which was the largest life-form on land 400 million years ago, may have been a completely unknown form of multicellular life, according to a new study.

Low Earth orbit is starting to look less like pristine wilderness and more like a crowded shipping lane, with thousands of ...

The ground beneath northern South America holds memories far older than any city or road. Locked inside ancient volcanic ...

Scientists have spent decades searching for the final resting place of Luna 9, the first spacecraft to soft-land on the moon. Now they’re on the cusp of finding it ...