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Blast off! Order now to get the Space & Beyond Box Planetary Collection! Explore water on Mars, Cassini’s unveiling of Saturn, and more! SUBSCRIBE RENEW DIGITAL EDITIONS GIVE A GIFT Login or Register | Customer Service Tonight's Sky — Search By Name Enter coordinates Use current location SUN & MOON MERCURY & VENUS MARS, JUPITER & SATURN Sun RISE — SET — Sun Moon — — Moon PHASE — DISK — Mercury RISE — SET — Mercury — Venus — — Venus — Mars RISE — SET — Mars — Jupiter — — Jupiter — Saturn — — Saturn — Tonight's Sky — Change location City/place name US state, Canadian province, or country OR US ZIP code Searching... Tonight's Sky — Select location Tonight's Sky — Enter coordinates Latitude: ° ' N S Longitude: ° ' E W UTC Offset: Home The Magazine News Observing Photos Videos Blogs Community Shop Magazine News Observing Photos Videos Blogs Community Shop MENU ABOUT THE MAGAZINE About Us Back Issues Email Newsletter Renew Digital Editions Advertiser Links Trips & Tours Contact Us Current Issue Special Issues Subscribe Give a Gift Advertise with Us Contests Press Room Subscriber Extras SUBSCRIBER EXTRAS IN EVERY ISSUE Sky this Month Ask Astro Web Extras COLUMNISTS Bob Berman Glenn Chaple Stephen James O'Meara Erika Rix Tony Hallas Adam Block Jeff Hester Phil Harrington FEATURES 50 Greatest Mysteries 50 Weirdest Objects Superstars Podcast StarDome Star Atlas Product Reviews 5 Questions with David Eicher NASA Perseverance rover: How it works and what it will do RECENT HEADLINES How 'Mars Undergound' sparked a return to the Red Planet What has the Juno spacecraft taught us about Jupiter? The Sky This Week from June 5 to 12 Half the matter in the cosmos was missing, but astronomers found it Remembering the Compton Gamma Ray Observatory 20 Years after its death The history and future of telescopes on the Moon Ancient Mars may have once had rings, then moons, then rings … TOPICS solar system galaxies stars cosmology black holes space flight exoplanets space physics milky way The Sky This Week from June 5 to 12 RECENT HEADLINES The Sky This Week from May 29 to June 5 The Sky This Week from May 22 to 29 The Sky This Week from May 15 to 22 The Sky This Week from May 8 to 15 The Sky This Week from May 1 to 8 The Sky This Week from April 24 to May 1 The Sky This Week from April 17 to 24 TOPICS Sky this Week Observing Podcasts Observe the Solar System Astronomy for Kids Product Reviews Star Atlas Tonight's Sky Sky Events Get to Know the Night Sky Tour the Deep Sky Sky Guide Observing Tools StarDome PICTURE OF THE DAY Happy holidays RECENT GALLERIES TOPICS Imaging Basics Reader Photo Gallery Calendar Picture of the Day Image Galleries Astro News Bytes: A Plasma Lensed Pulsar RECENT HEADLINES Astro News Bytes: Downsizing the Andromeda Galaxy Experience Starmus with these unique volumes Astro News Bytes: The Most Distant Quasar The Real Reality Show: Earth Is Not Flat The Real Reality Show: 10 Great Astronomers of the Enlightenment Astro News Bytes: An Interstellar Asteroid The Real Reality Show: Ancient Cosmology: Part 2 TOPICS Cosmic Adventures Astronomy 101 Dave's Universe Seasonal Observing Tour the Solar System Observing Basics The Real Reality Show Issue Previews Astronomy welcomes Caitlyn Buongiorno RECENT POSTS Enter the Space & Beyond Box Photo Contest! Last chance to join our 2020 Costa Rica Star Party! Join Us in Tucson for Our Annual Public Star Party! Learn about the Moon in a great new book New book chronicles the space program Astro stuff galore at the Swap and Sell TOPICS Local Group From the Industry Dave's Universe Year of Pluto READER GALLERIES TOPICS Events Astronomy Foundation Reader Galleries Groups Why Join? Astronomy Day NEW PRODUCTS The Complete Star Atlas Cosmos: Origin and Fate of the Universe Astronomy's Ganymede Globe IN OUR STORE Subscribe Back Issues Special Issues Books & DVDS Digital Downloads Space & Beyond Box Globes & Maps Posters Calendar STEM Toys Gifts & Toys CURRENT ISSUE The Magazine Tonight's Sky News Observing Photos Videos Blogs Community Shop Blast Off! Subscribe Today >>> Astronomy Exclusive Get the latest information from the experts in Cosmos . Reserve Now » Under the stellar sea In celebration of 30 years in space, the Hubble Space Telescope has released a stunning image of the great Cosmic Reef. Read more >>> Star Atlas 87,000 stars, 1,200 deep-sky objects and 24 high-quality star maps. Order Now » Inside star cities Watch editor David J. Eicher introduce his latest book on galaxies, or order now ! The hunt for dangerous asteroids continues More than 100 of Earth's best telescopes have closed due to COVID-19. But key asteroid detection efforts remain online. Read more >>> 50 years later: Apollo 11 Michael Collins recounts his unique role in the first Moon landing. Read more >>> Martian stargazing Dark, dusty skies. Watch now >>> Zooming in on the Sun New ultra-high-resolution images reveal previously invisible filaments of million-degree plasma threaded through the Sun's atmosphere. Read more >>> Take a trip you'll never forget! With a range of exciting adventures to choose from, you're sure to find a trip that's perfect for you. Explore trips now >>> The Degenerate Era When the last stars die, the cosmos will turn into a drab place, with smoldering stellar remnants fading from sight like cooling embers. Read more >>> SpaceX loses first Starship prototype The company will move forward with other prototypes. Read more >>> Moon Village: Humanity's first step toward a lunar colony? Read more >>> Join us! On December 5, 2020, join us as we set sail for 15 days aboard our privately chartered cruise ship. Learn more >> Where did Earth's water come from? Looking beyond asteroids to find the origins of water Read more >>> 'It's a haunting thing' Space artists discuss the first black hole image. Read more >> New Flashcards Explore 30 of the best galaxies in the universe. Order Now » Disappearing Moon Without our satellite, the planet would wobble, dramatically affecting seasons and climate. Read More >>> Under the stellar sea In celebration of 30 years in space, the Hubble Space Telescope has released a stunning image of the great Cosmic Reef. Read more >>> The hunt for dangerous asteroids continues More than 100 of Earth's best telescopes have closed due to COVID-19. But key asteroid detection efforts remain online. Read more >>> Zooming in on the Sun New ultra-high-resolution images reveal previously invisible filaments of million-degree plasma threaded through the Sun's atmosphere. Read more >>> Take a trip you'll never forget! With a range of exciting adventures to choose from, you're sure to find a trip that's perfect for you. Explore trips now >>> The Degenerate Era When the last stars die, the cosmos will turn into a drab place, with smoldering stellar remnants fading from sight like cooling embers. Read more >>> Join us! On December 5, 2020, join us as we set sail for 15 days aboard our privately chartered cruise ship. Learn more >> Where did Earth's water come from? Looking beyond asteroids to find the origins of water Read more >>> 'It's a haunting thing' Space artists discuss the first black hole image. Read more >> Featured Blogs Sky Events Ask Astro PICTURE OF THE DAY see all » Happy holidays The Cone Nebula (NGC 2264) combines with the Christmas Tree Cluster in this nebulous region 2,700 light-years away in the constellation Monoceros. LATEST NEWS NASA Perseverance rover: How it works and what it will do How 'Mars Undergound' sparked a return to the Red Planet What has the Juno spacecraft taught us about Jupiter? POPULAR The hunt for dangerous asteroids continues 50 years later: Jim Lovell recounts the Apollo 13 disaster 10 unique gifts for dads who love astronomy and skygazing TRIPS & TOU...