How did NASA manage to fly to the Moon in just 4 days and SpaceIL now need almost two full months to get there?
There are two ways of going somewhere in space: the fast way or the economical way. If you have a small unmanned probe, there’s no rush. No astronauts…
Why did NASA not see Atlas (the comet that is roughly 1/2 the size of the Sun that will come within 70 million miles of the Earth) before?
First, let’s get something out of the way: comet C/2019 Y4 (sometimes called ATLAS after the telescopes that found it) is not “half the size of the sun.” The comet’s…