The mantle of the Earth, up to 1,800 miles (2,900 kms) thick and 84% of the Earth’s volume, was assumed to be a simple layered one in the past. Yet new studies show it not to be a simple process, but ...

The Sahara is often thought of as the driest desert in the world, but there is in fact a desert that is even older and more arid, with some parts receiving absolutely no rain at all for 200 million ye ...

The panoramic image is the result of two Hubble observation programs: the Panchromatic Hubble Andromeda Treasury (PHAT), which began about a decade ago ... 2.5 million light-years from Earth ...

Certain birds that gave rise to today’s ducks and geese found sanctuary in Antarctica during a mass extinction event 66 ...

A few fossilized body parts hinted at an enigmatic bird's close ties to waterfowl like ducks and geese. A newfound skull may bolster that idea.

The light reaching your eyes tonight left Andromeda 2.5 million years ago. At that time, early human ancestors, Homo habilis, had just begun making stone tools on Earth. That means when you look at ...

Imagine creatures that have survived since the time of dinosaurs. Species like the tuatara, sturgeon, crocodile, hagfish, ...

Around 20 years ago, a team of paleontologists identified Vegavis iaai for the first time, citing a fossil from Antarctica, around 68 million years to 66 million years old. At the time of the ...

In 1920, astronomers Harlow Shapley and Heber Curtis held a Great Debate. Shapley argued that the spiral nebulae were small and in the Milky Way, while Curtis took a more radical position that they ...

The asteroid that slammed into Earth 66 million years ago and led to the extinction of dinosaurs was estimated to be about 6.2 miles (10 kilometers) in diameter and marked the last known large ...