Earth's shape can be tested in surprisingly simple ways without relying on space photographs. The strongest part of the evidence is how many independent observations lead to the same answer.

New research reveals that molten rock can absorb far more oxygen than expected, potentially helping explain how Earth's ...

Picture all of Earth’s oceans, which cover about 70% of the planet and are mostly made of hydrogen. Now multiply that by nine. That may be the amount of hydrogen in Earth’s core, possibly making it ...

Flat Earth theory can be tested without relying on space photographs or one institution. Several independent observations ...

Scientists have long known that Earth's core is mostly made of iron, but the density is not high enough for it to be pure iron, meaning lighter elements exist in the core, as well. In particular, it's ...

A suite of scientific balloons is about to lift off from NASA’s Columbia Scientific Balloon Facility’s field site in Fort Sumner, New Mexico, carrying instruments that will help scientists understand ...

(CNN) — Picture all of Earth’s oceans, which cover about 70% of the planet and are mostly made of hydrogen. Now multiply that by nine. That may be the amount of hydrogen in Earth’s core, possibly ...

(CNN) — Picture all of Earth’s oceans, which cover about 70% of the planet and are mostly made of hydrogen. Now multiply that by nine. That may be the amount of hydrogen in Earth’s core, possibly ...

Microorganisms from our planet could survive on celestial bodies where water is present, such as Mars. That is the conclusion of Ph.D. candidate Tommaso Zaccaria after experiments with simulated space ...