How Did We Miss the Asteroid That Will Narrowly Miss Us?: Space still harbors surprises aplenty, even with our rapidly evolving technologies
  • frongt@lemmy.zip
    143·
    3 months ago

    tl;dr:

    NASA’s Goldstone antenna is down for major repairs for an extended period of time

    But the real answer is that asteroids are small, cold, and dark. It’s very hard to see such an object against space, which is very large, and also very cold and dark. It’s like trying to find a grain of sand floating around in a dark room.