Jupiter and Saturn will make their closest approach in centuries on December 21, the winter solstice.
All in Sky Over Swarthmore
Jupiter and Saturn will make their closest approach in centuries on December 21, the winter solstice.
We now know that comets – small icy bodies left over from the formation of the solar system – pass by Earth regularly. Astronomers discover dozens of them each year. Most of us are unaware that this is happening overhead because only rarely does a comet become bright enough to see with the unaided eye. This May, however, we may be fortunate enough to see a rare naked-eye comet. Or we may not.