The answer might surprise you. Early astronomers once believed Earth was the center of the universe, with the sun, moon, and planets orbiting around it. This geocentric model seemed to explain the ...

Scientists have uncovered new information about the Earth's core: it may not be completely solid. Instead, its center may be more malleable than expected and has changed shape in recent years.

An impact with Earth would cause a massive explosion and impact crater, astronomers say. The asteroid, known as Asteroid 2024 YR4, was first reported to the Minor Planet Center on Dec. 27 ...