Astronomy 2018-01.pdf

SPECIAL ISSUE www.AVol.46 Issue 1The world s best-selling astronomy magazineDO EXOPLANETS HAVE MOONS?p.30 LISTEN TO THE MUSIC OF THE HEAVENS p.46 JANUARY 2018 Neutron star merger detected Seven Earth-sized planets orbiting nearby star Mysteries of fast radio bursts Cassini s last glory at SaturnAND MORE p.20BONUS!Guide to the Night Sky 2018THE LATEST NEWS ONDiscover deep-sky objects in Auriga p.52Starmus IV rocks in Norway p.56 Two neutron stars merge in a kilonova,throwing out gravitational waves,gamma rays,and other forms of light.BONUS ONLINE CONTENT CODE p.4 Tele Vue Eyepiece Design Revolves Around a SimpleIdea:Make It Better,or Not At All.At the Galactic Core of Eyepiece Advancement for 40 Years32 Elkay Dr.,Chester,New York 10918 (845)469-Tele VueVi s i o n a r ytelevueopticsForty years ago Al Nagler founded Tele Vue with a mission to provide optics of his own design that would create a new performance para-digm.The first two eyepieces introduced amateur astronomers to a Plssl-type with greater field sharpness and the revolutionary 82 Nagler“space-walk experience.”This dedication to bringing our customers meaningful performance advances through innovative design,using the highest-grade material and latest manufacturing advancements,continues in todays Plssl,DeLite,Panoptic,Delos,Nagler,and Ethos eyepieces,Barlows,and Powermates.All are 100%inspected for optical and cosmet-ic excellence,backed by a lifetime warranty,are serviceable,and provide a lifetime of exquisite images.Tele Vue also leads the industry in easy-to-understand,no-nonsense technical advice.Even if you dont think you need it,contact us.You may just be surprised by what you hear!1975SINCEEVERYTHING FOR THE AMATEUR ASTRONOMEROrionTOrders:(800)447-1001Customer Service:(800)676-1343Retail prices shown are current as of 10/20/17 from Orion,excluding sale items.Prices are subject to change without notice.Please check OrionT for the most current pricing.Dealer pricing and/or promotions may vary.*We only collect sales tax in CA&PA.See website for details.NEW PRODUCT2017Phone not includedOrion SteadyPix Quick Smartphone Photo Adapter#40003$22.99Orion Telescopes&Binoculars now accepts the following payment options:Orion Exploring the Cosmos:An Introduction to the Night Sky#51441$12.99Orion GiantView BT-100 Binocular Telescope#51849$1,599.99Orion 70mm White-Light Solar Refractor Telescope#10381$129.99Orion VersaGo E-Series Altazimuth Mount#52587$99.99Orion BX90 EQ 90mm Equatorial Refractor#52588$229.99Orion ED66 CF Carbon Fiber Refractor Telescope#40905$749.99Orion Tritech CFX Carbon Fiber Tripod with 3-Way Pan Head#40811$299.99FREE SHIPPINGon orders of$250 or moreNO SALES TAX*on most ordersINSTALLMENT BILLINGon orders of$350 or moreOrion SkyQuest XT10 PLUS Dobsonian Reflector Telescope#8987$749.99Orion 8x40 Wide-Angle Camo Binoculars#51850$89.99Orion 8-24x25 Compact Zoom Binoculars#51851$119.99Orion LHD 80 Lanthanum Ultra-Wide 1.25/2 Eyepieces$269.99 eaHave questions?We are here to help!Use“Live Chat”today on our website.Orion StarShootG4 Color/Monochrome Deep Space Imaging CamerasOrion Otter ED 8x42 Waterproof Binoculars#51848$249.99Orion Otter ED 10 x42 Waterproof Binoculars#51847$269.99NEW EYE OPENING PRODUCTS FROM ORIONColor#53088$499.99Monochrome#53087$499.99CONTENTSMy Science Shop Perfect gifts for your favorite science geeks.Picture of the Day Gorgeous photos from our readers.Ask Astro Archive Answers to all your cosmic questions.News The latest updates from the science and the hobby.4 ASTRONOMY JANUARY 201820 COVER STORYTop 10 space stories of 2017 Last year,we found a star with seven Earth-sized planets,said goodbye to the Cassini mission,and watched a total solar eclipse race across America.LIZ KRUESI30Do exoplanets have moons?Our solar system harbors at least 180 moons.Now astronomers have launched a quest to find satellites in another system.NOLA TAYLOR REDD36Sky This MonthTotality over America.MARTIN RATCLIFFE AND ALISTER LING38StarDome and Path of the PlanetsRICHARD TALCOTT;ILLUSTRATIONS BY ROEN KELLY44Ask AstroCelestial motion.46The real music of the spheres The sky is an endless source of inspiration for artists and composers.Heres a look back at how the stars have influenced music.JOEL DAVIS52Explore Aurigas deep-sky wonders Bright star clusters,challenging nebulae,and even a distant globular cluster await you in one of winters great constellations.STEPHEN JAMES OMEARA56Snapshots from Starmus The fourth Starmus Festival,a celebration of science and the arts,took place in Trondheim,Norway,in June 2017.DAVID J.EICHER60Explore Scientifics 12-inch Truss Tube Dobsonian This telescope offers top-notch construction and high-quality optics,and is easy to set up and use,as well.MIKE REYNOLDS62Starmus awards 2017 Stephen Hawking medals The prestigious prize recognizes popularizers of science from around the world.JAKE PARKSCOLUMNSStrange Universe 10BOB BERMANObserving Basics 64GLENN CHAPLESecret Sky 66STEPHEN JAMES OMEARABinocular Universe