Planetary scientists analyzing oxygen isotopes in lunar soil from the Apollo mission sites conclude that meteorite bombardment over 4 billion years could only have delivered a tiny fraction of Earth’s ...

NASA research using Apollo lunar regolith data refines the Moon’s impact record and places limits on meteorite contributions to Earth’s water over geologic time.

For a long time, scientists assumed that Earth's water was delivered by asteroids and comets billions of years ago. This coincided with the Late Heavy Bombardment (ca. 4.1 to 3.8 billion years ago), a ...

Thundereggs look like regular rocks from the outside, but contain intricate and colorful mineral patterns inside — often made ...

NASA’s Curiosity rover just wrapped a high-stakes mission on Mars, capturing rare nighttime images and uncovering a key ...

New human clinical trial proves arginine, an amino acid, can modify plaque formation on teeth, thereby protecting against dental caries CHENGDU, SICHUAN, CHINA ...

A growing number of countries are planning a permanent solution to the issue of radioactive waste by burying it deep underground. Schemes take many years to plan, and many more years to build, but ...

There are various types of body composition tests (more on these below). Still, each one measures the percentages of fat and fat-free mass (muscle and bone) in the body. Knowing these percentages can ...

The following essay is reprinted with permission from The Conversation, an online publication covering the latest research. Texas Hill Country is known for its landscapes, where shallow rivers wind ...

A thick icy shell spans the surface of Europa, one of Jupiter’s moons. Beneath it lies a vast ocean — twice the volume of our planet’s — that teems with the possibility of life. This body of salt ...