ice ages

Mars has Been Through Many Ice Ages in the Last Billion Years

Like Earth, Mars has experienced periods of extreme glaciation or ice sheet coverage, which are known as ice ages. As…

6 months ago

800 Million Years Ago, it Was Raining Asteroids on the Earth and Moon

Natural processes here on Earth continually re-shape the planet's surface. Craters from ancient asteroid strikes are erased in a short…

12 months ago