(Continued from page 17)

• But wait. There's more in this direction of space: a vast collection of galaxies external to our Milky Way.
• The Coma galaxy cluster, also in the direction of the constellation Coma Berenices, is made up not of individual stars, but of whole galaxies of stars.
• It is invisible to the unaided eye (or even in a small telescope), but astronomers with large telescopes study this region of space to learn more about the cosmos.
• Bottom line: On springtime evenings, star-hop from the constellation Leo to the Coma star cluster in the constellation Coma Berenices. Plus - although you cannot see it with your eye or with binoculars - a huge cluster of external galaxies - lies in the direction of Coma Berenices.
•