2020-05-01_Astronomy

SPACE CLOUDS: TAKE A 3D LOOK INSIDE NEBULAE p. 44

http://www.Astronomy.com

Vol. 48

• Issue 5

MAY 2020

The world’s best-selling astronomy magazine

Why the Big Bang

is still stumping

astronomers p. 20

How V.M. Slipher

discovered

the expanding

universe p. 30

EXPLORE

EDGE-ON

AND FACE-ON

GALAXIES p. 56

BOB BERMAN

on backyard

astronomy p. 16

PLUS

• CHARTING the
  19th-century heavens p. 52


• WE TEST Canon’s
  new astrocamera p. 62

BONUS

ONLINE

CONTENT

CODE p. 4

BONUS

ONLINE

CONTENT

CODE p. 4