401–420 of 491 results

Sky & Telescope Magazine

Sky & Telescope September 2010

FEATURED ARTICLES The Mysterious Lady on the Moon Is the Moon Maiden on Cassini's famous 1679 Moon map an astronomer's secret declaration of love?By Françoise Launay and William Sheehan Binocular Showpieces for Light-Polluted Skies Over a bright city or suburb, some sky sights shine through better than others.By Hugh Bartlett…

HiRISE image of Phoenix's descent

Beyond the Printed Page

More Amazing HiRISE Views of Mars

We couldn't fit enough eye-popping images from NASA's Mars Reconnaissance Orbiter in one Sky & Telescope article, so here are more great images to captivate you.

Sky & Telescope Magazine

Sky & Telescope August 2010

FEATURED ARTICLES Einstein's Ultimate Laboratory A recently discovered binary pulsar gives scientists the most rigorous test yet of general relativity.By Michael Kramer Glimpses of an Evolving Planet A stroll through Earth's past gives astronomers vital clues to what terrestrial-sized exoplanets might look like.By Jeff Hecht In Perfect Focus Modern imaging…

Beyond the Printed Page

Earth's Past and the Search for Habitable Planets

Ever since Galileo first turned his telescope to the night sky, people have dreamed of discovering life on other planets besides our own. For centuries, very little progress was made. In the mid-twentieth century, after the canals on Mars had proved to be illusions, extraterrestrial life seemed more remote than…

Sky & Telescope Magazine

Sky & Telescope July 2010

FEATURED ARTICLES Lessons from Solar Twins The Sun's closest stellar analogs hold clues to our own star's past and future.By Jeffrey Hall Deep-Sky Discovery An amateur astronomer unearths a new planetary nebula, hinting that more hidden jewels are lurking out there.By Mike Simmons and Dave Jurasevitch A New Astroscanner One…

Sky & Telescope Magazine

Sky & Telescope June 2010

FEATURED ARTICLES Flowers of the Night Sky Here's a guide to summer's best and most representative planetary nebulae.By Ted Forte Hubble's Greatest Scientific Achievements A leading astrophysicist reflects on 20 years of great discoveries by the Hubble Space Telescope.By Mario Livio Celestron Turns 50 The entrepreneurial spirit of one amateur…

Beyond the Printed Page

Great Red Spot Transit Table 2010-2011

Transit times for Jupiter's Great Red Spot are listed through February 2011.

solar expert Jeff Hall

Beyond the Printed Page

Jeff Hall Talks about Solar Twins

Jeff Hall talks about the search for sunlike stars and what they can tell us about our own Sun.

Sky & Telescope Magazine

Sky & Telescope May 2010

FEATURED ARTICLES Amateurs Catch a Crucial Nova Two dedicated backyard astronomers alerted professional telescopes worldwide and in space to U Scorpii's eruption.By Mike Simonsen and Alan MacRobert Saving the Night Sky A new mindset and new technology are poised to slow, and perhaps reverse, this bane of astronomy.By J. Kelly…

Sky & Telescope Magazine

Sky & Telescope April 2010

FEATURED ARTICLES Imagining Other Worlds Space artists help us visualize unseen worlds.By Ker Than Hanging in the Balance There's a small but non-zero chance that our solar system will go haywire some time in the next few billion yearsBy Greg Laughlin The Universal Jet Set A wide variety of objects…

Sky & Telescope Magazine

Sky & Telescope March 2010

FEATURED ARTICLES Shedding Light on Dark Stars Bizarre stars powered by dark matter may have been the first to appear after the Big Bang.By Ker Than What Else Is Out There? Planets and other large objects could be lurking far beyond Neptune.By David Jewitt Digitizing History Amateurs help scan a…

Sky & Telescope Magazine

Sky & Telescope February 2010

FEATURED ARTICLES NASA Finds Lunar Water NASA's "crash and splash" gambit dredged up water from a lunar crater.By J. Kelly Beatty High-Def Lunar Landscapes Japan's Kaguya spacecraft has recorded some of the most dramatic lunar images ever seen.By Motomaro Shirao Lunar Photography with AviStack A powerful freeware program takes your…

Sky & Telescope Magazine

Sky & Telescope January 2010

FEATURED ARTICLES NASA Sets Its Sights on the Sun The Solar Dynamics Observatory will reveal new details about the Sun's powerful magnetic storms.By Laura Layton and Dean Pesnell Finding the First Galaxies Hubble has imaged the most distant galaxies yet. But to see the first galaxies, astronomers need to go…

Beyond the Printed Page

Spacecraft Imaging for Amateurs: Hyperlink Supplement

An international community of space enthusiasts has become adept at reinterpreting images from planetary spacecraft.

Sky & Telescope Magazine

Sky & Telescope December 2009

FEATURED ARTICLES Amateur Exoplanets Amateur data was essential to the discovery of two new extrasolar planets.By Robert Naeye A New Infrared Sky NASA is about to launch its WISE mission to survey the sky at wavelengths poorly covered to now.By Peter Eisenhardt and Ned Wright Not Much Eyesight, Plenty of…

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Voices from Educational Planetariums

Directors of small planetariums discuss some of the major issues facing their institutions.

Sky & Telescope Magazine

Sky & Telescope November 2009

FEATURED ARTICLES The Great 2012 Scare The world won't end on December 21, 2012. Here's what to tell anybody who's worried that it might.By E. C. Krupp Starscape Astrophotography It takes planning, research, and sometime luck to capture memorable skyscapes.By Jerry Lodriguss Celestron's CGE Pro Mount The new CGE Pro…

Sky & Telescope Magazine

Sky & Telescope October 2009

FEATURED ARTICLES Prelude to Disaster In 2006 RS Ophiuchi produced a powerful nova eruption. However, a much bigger explosion may be coming soon.By Sumner Starrfield, Mike Bode, & Tim O'Brien The New Habitable Zones Microbes could thrive in all sorts of "impossible" places on other worlds.By Chris Impey Sky-Watcher's Newest…

Sky & Telescope Magazine

Sky & Telescope September 2009

FEATURED ARTICLES Smashing the Distance Record An exploding star establishes a new benchmark for most-distant known object in the universe.By Edo Berger Ice Age Impact Scientists are debating whether a comet triggered the extinction of the large North American mammals.By Ivan Semeniuk The Cosmologist Left Behind Edwin Hubble usually gets…

Beyond the Printed Page

Great Red Spot Transit Table 2009

Transit times for Jupiter's Great Red Spot are listed through the end of 2009.