BLACK HOLES vs. GALAXIES: Who's in Charge? OBSERVING: Small Scope Tour of the Twins MOON: The Highs and Lows of Crater Rims PAGE 18 PAGE 58 PAGE 52 THE ESSENTIAL GUIDE TO ASTRONOMY The World's Biggest Radio Dish Inside China's FAST How to See the Deepest Penumbral Eclipse You May Ever Witness PAGE 48 The Big Bang That Changed Astronomy Supernova 1987A PAGE 36 REVIEWED: Pentax's Cool Camera for Astronomy FEBRUARY 2017 skyandtelescope.com PAGE 64 PAGE 26http://www.skyandtelescope.com