Earth and our entire Milky Way galaxy may sit inside a mysterious giant hole which makes the cosmos expand faster here than in neighboring regions of the universe, astronomers say.

Explore the Past in Google Earth . Google Earth has always helped everyone see the world from above. Now, it lets you see how streets and neighborhoods have changed over the years ...

Researchers have admitted that it's "theoretical" to put a giant mesh bag around an asteroid to build space cities — but that it's technically feasible.

(THE CONVERSATION) – How does the inside of the Earth stay boiling hot for billions of years? Henry, age 11, Somerville, Massachusetts Our Earth is structured sort of like an onion – it’s one… ...

"And we don't know what they are, where they're coming from, what they're made of, [or] what role they play inside the Earth." Thorne wasn't thinking of ULVZs when he launched the new research ...

Earth's internal temperature increases between the boundary of the upper mantle and the bottom of the lower mantle, ranging from around 1,800 to 6,700 degrees Fahrenheit (1,000 to 3,700 degrees ...