Astronomy

SEPTEMBER 2017 16 times we didn’t find E.T. p. 34 CASSINI’S GRAND FINALE AT SATURN p. 28 http://www.Astronomy.com Vol. 45 Issue ...

You and Your Shadow... Tele Vue- Wherever and Whenever You Stroll, Never Be Without Your Wanderlust Companion. Tele Vue-60 Speci ...

major in your Passion for the stars. Whether you’re passionate about astronomy or astrophysics, Morehead State will help support ...

CONTENTS Trips and tours Travel the world with the staff of Astronomy. My Science Shop The perfect gift for your favorite scienc ...

For over 25 years, The Great Courses has brought the world’s foremost educators to millions who want to go deeper into the subje ...

Follow Astronomy http://www.twitter.com/ AstronomyMag http://www.facebook.com/ AstronomyMagazine plus.google.com/ +astronomymaga ...

WWW.ASTRONOMY.COM 7 You’ve been worrying about what filters you’re going to use for the upcoming eclipse, but have you thought a ...

QG QUANTUM GRAVITY EVERYTHING YOU NEED TO KNOW ABOUT THE UNIVERSE THIS MONTH... 8 ASTRONOMY • SEPTEMBER 2017 SNAPSHOT Let’s hear ...

P Astronomers jump their galaxy count in the cosmos by a factor of 10 p. 18^ Making sense of exoplanets p. 24 p. 31 The world’s ...

10 ASTRONOMY • SEPTEMBER 2017 T he seven new Earth- sized planets around TRAPPIST-1, a red dwarf star 39 light- years away, rece ...

ASTROLETTERS WWW.ASTRONOMY.COM 11 The deserving astrophysicist I can’t ever read about Jocelyn Bell Burnell, as I did in May 201 ...

ASTRONEWS East Sept. 6 Sept. 7 25° north 35° north 45° north Sept. 5 Sept. 6 Sept. 5 Sept. 6 Sept. 5 FAST FAC T 12 ASTRONOMY • S ...

ASTRONEWS WWW.ASTRONOMY.COM 13 The Perseus cluster is experiencing giant waves of gas Cygnus A is an elliptical galaxy nearly 80 ...

ASTRONEWS Diameter of all planets combined 248,982 miles (400,698km) Distance between Earth and the Moon 238,856 miles (384,402k ...

ASTRONEWS WWW.ASTRONOMY.COM 15 ALMA images a star’s icy ring 40 to 50 light-years The distance at which a super- nova could fry ...

16 ASTRONOMY • SEPTEMBER 2017 O n April 22, I was one of 40, people who gathered near the Washington Monument for the March for ...

WWW.ASTRONOMY.COM 17 BUY NOW AT: MyScienceShop.com/ConstellationFlashcards Learn to identify 36 favorite constellations with thi ...

ASTRONEWS 18 ASTRONOMY • SEPTEMBER 2017 Weirdest star gets weird again Astronomers recently discovered that dwarf planet 2007 OR ...

ASTRONEWS WWW.ASTRONOMY.COM 19 Antimatter is matter’s opposite. For each par- ticle of “normal” matter, there is an antimatter p ...

20 ASTRONOMY • SEPTEMBER 2017 lthough our limited eyes cannot detect purple stars, the color purple is nevertheless part of a sk ...