DART UPDATE: For the first time ever, human tech has altered the orbit of a celestial body. In a media briefing today, NASA reported that the DART spacecraft reduced the orbital period of Dimorphos by a whopping 32 minutes when it slammed into the asteroid moon two weeks ago. This change far exceeds expectations. New images from Hubble also reveal a beautifully-structured tail of debris that is within range of large amateur telescopes. Developing story @ Spaceweather.com