Looking for a sky event this week? Check out our full Sky This Week column. December 9: Dione and Tethys trade places Neptune is stationary at 7 P.M. EST, ending its retrograde motion. The ice giant ...
Could one comet rewrite what is known about the chemistry and dynamics of distant planetary systems? That’s the question driving an extraordinary, multi-spacecraft campaign to study 3I/ATLAS-just the ...
Four zodiac signs are confused right now, but everything is about to fall into place because Neptune retrograde ends on ...