Earth | Page 11 of 13 | Astronomy.com

Scientists find “birthmarks” from Earth’s infancy

Brief history of earth imaging

An artificial comet holds secrets to Earths life

Exotic Objects, Solar System, Stars

Supernova showered Earth with radioactive debris

The Real Reality Show: How an Asteroid Killed Off the Dinosaurs

Solar System, The Moon

Study questions dates for cataclysms on early Moon, Earth

As Earth was molten early during its formation, dense metals should have sunk toward the core, yet iron is found closer to the surface. Did asteroids and comets deliver some of these materials?

Oxygen in Earth’s core gives new view of planetary formation

Alien Life, Solar System

The Real Reality Show: How Did Life Start on Earth?

Intentional ignorance

Solar System, The Sun

Corrected sunspot history suggests climate change since the Industrial Revolution not due to natural solar trends

Solar System, The Moon

From a million miles away, NASA camera shows Moon crossing face of Earth