Sky & Telescope May 2020 Magazine
In May’s issue of Sky & Telescope, we explore the rocky surfaces of Ryugu and Bennu and hop through galaxies well-placed for viewing this month. We also watch new star systems form via beautiful images from the ALMA radio array and the SPHEREX instrument, which have changed our ideas about planet formation. New ideas push out old ones in technology, too: CCD cameras are heading in the direction of floppy disks and dinosaurs as CMOS cameras prepare to take their place. This month, we have a particularly excellent view of Jupiter and its moons. Galileo saw four Jovian moons in 1610; now, Scott S. Sheppard and his team have reported 82 moons in all. How many have you seen?
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