Two Spacecraft Designed to Study the Sun Also Got Some Recent Peeks at Earth and Other Planets
A string of planets in our solar system sparkles in photos from 3 different sun probes
New evidence for multiple ice ages on Mars. Earth has had at least 5 major ice ages. Now it appears Mars – the next planet outward from the sun – has undergone anywhere from half a dozen to 20 ice ages in the past several hundred million years.
