. . . the Dawn mission is coming to an end. Remember those shiny spots on the asteroid? They’re still making headlines! Here is an
Almost 30 million years ago, an asteroid or comet impact fused Saharan quartz grains into desert glass.
A hundred years ago, no one had a clue that disaster can strike us suddenly from the sky. Today we have the best knowledge and finest equipment humanity has ever had to meet the challenge, if it arises.