Astronomy - November 2016 (gnv64)

Astronomy - November 2016
English | 80 pages | True PDF | 18.1 mb

20 COVER STORY
Bob Berman’s guide to cosmic rays his energetic low of particles surrounds us, but what efect does it really have? BOB BERMAN
FEATURES
26 The exoplanet next door
here’s no star closer to us than Proxima Centauri — and now we know it has an Earth-mass planet in its habitable zone. JOHN WENZ
30 Sizing up space rocks
From near-Earth objects to the distant Oort Cloud, the solar system’s bodies teach us about its origins. MICHAEL CARROLL
36 Sky This Month
Evening planet show. MARTIN RATCLIFFE AND ALISTER LING
38 StarDome and Path of the Planets RICHARD TALCOTT; ILLUSTRATIONS BY ROEN KELLY
44 Ask Astro
Faster than light.
46 What links galaxies and black holes?
Most large galaxies harbor a supermassive black hole in their core. Astronomers are studying how these monsters afect their host’s evolution. JOHN KORMENDY
53 Meet astronomy’s West Coast wizards
By specializing in lenses, mirrors, and drives, three California companies have risen to the top. TONY HALLAS
56 How astronomers measure brightness
Whose bright idea was this backward magnitude system anyway? MICHAEL E. BAKICH
COLUMNS
Strange Universe BOB BERMAN 8
For Your Consideration JEFF HESTER 16
Secret Sky STEPHEN JAMES O’MEARA 18
Observing Basics GLENN CHAPLE 64
Astro Sketching ERIKA RIX 66
Binocular Universe PHIL HARRINGTON 68
QUANTUM GRAVITY
Snapshot 6
Astro News 10
IN EVERY ISSUE
From the Editor 4
Letters 8, 18, 66
New Products 69
Reader Gallery 70
Advertiser Index 73
Breakthrough 74

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