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category_outlined / Science

Astronomy July 2019

The world's best-selling astronomy magazine offers you the most exciting, visually stunning, and timely coverage of the heavens above. Each monthly issue includes expert science reporting, vivid color photography, complete sky coverage, spot-on observing tips, informative telescope reviews, and much more! All this in a user-friendly style that's perfect for astronomers at any level.

United States
Kalmbach Publishing Co. - Magazines
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$8.26(Incl. tax)
$59.28(Incl. tax)
12 Issues


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the magic of apollo 11

Follow the Dave’s Universe blog: Follow Dave Eicher on Twitter: @deicherstar I remember it like it was yesterday. (Well, OK, not yesterday. It was 50 years ago.) As an excited 7-year-old kid interested in space, I was abuzz to watch the first Moon landing. I remember receiving special parental permission to stay up late. It was July 20, 1969 — an amazing time in history. Richard Nixon loomed over the White House, not yet implicated in the crimes that would bring him down. The first troop withdrawals began in Vietnam, a process that would last another six years. Preparations were commencing for the Woodstock music festival in upstate New York the following month. And the inhabitants of planet Earth were waiting to see Neil Armstrong and Buzz Aldrin step out of the…

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Editor David J. Eicher Art Director LuAnn Williams Belter EDITORIAL Senior Editors Michael E. Bakich, Richard Talcott Production Editor Elisa R. Neckar Associate Editors Alison Klesman, Jake Parks Copy Editor Dave Lee ART Graphic Designer Kelly Katlaps Illustrator Roen Kelly Production Specialist Jodi Jeranek CONTRIBUTING EDITORS Bob Berman, Adam Block, Glenn F. Chaple, Jr., Martin George, Tony Hallas, Phil Harrington, Korey Haynes, Jeff Hester, Liz Kruesi, Ray Jayawardhana, Alister Ling, Steve Nadis, Stephen James O’Meara, Tom Polakis, Martin Ratcliffe, Mike D. Reynolds, Sheldon Reynolds, Erika Rix, Raymond Shubinski SCIENCE GROUP Executive Editor Becky Lang Design Director Dan Bishop EDITORIAL ADVISORY BOARD Buzz Aldrin, Marcia Bartusiak, Timothy Ferris, Alex Filippenko, Adam Frank, John S. Gallagher lll, Daniel W. E. Green, William K. Hartmann, Paul Hodge, Edward Kolb, Stephen P. Maran, Brian May, S. Alan Stern, James Trefil KALMBACH MEDIA Chief Executive Officer Dan Hickey Senior Vice President, Finance Christine Metcalf Senior Vice President, Consumer Marketing Nicole McGuire Vice President, Content…

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astro letters

We welcome your comments at Astronomy Letters, P. O. Box 1612, Waukesha, WI 53187; or email to Please include your name, city, state, and country. Letters may be edited for space and clarity. Correction On page 54 of the April issue, we mistakenly used an image of M63 as M94. (The M63 image is correct on page 55.) Here is the image we should have used. Spotting Jupiter I’m writing in response to Stephen James O’Meara’s recent “Naked-eye Mars in daylight” column in the February 2019 issue. I live in southwest Utah, and 2012 was a banner year for us. We had an annular eclipse in May, Venus transiting the Sun in June, and the Moon occulting Venus in August. This last event was unfortunately clouded out by rain, but I did get…

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speeding pulsar

Scientists recently discovered a bizarre neutron star brightly beaming out energy as it hurtles through space. The pulsar, named J0002+6216, is a rapidly rotating neutron star left over from a supernova explosion. Spinning 8.7 times per second, the pulsar gives off bursts of radiation like a lighthouse as seen from Earth, alerting astronomers to its whereabouts and motion. When they homed in on the object with NASA’s Fermi Gamma-ray Space Telescope, they found a tail of radio emissions trailing behind it. Pointing directly at the supernova remnant that created it, the orange tail indicates the pulsar is blasting away from the explosion. Based on their calculations, astronomers think the pulsar is fleeing the remnant at 2.5 million mph (4 million km/h), putting it among the fastest 2 percent of pulsars…

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hot bytes

HIDDEN GIANT Japanese astronomers found a 30,000-solarmass black hole hiding in an interstellar gas cloud by watching the gas swirl around the massive object. FAMILIAR TERRAIN Slot canyons spotted by Cassini on Saturn’s moon Titan may form like those on Earth — through sporadic heavy flooding, but of methane, not water. COSMIC CONNECTION Researchers traced meteorites that fell near Sariçiçek, Turkey, to the impact that created a 22 millionyear-old crater on the dwarf planet Ceres.…

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two ghostly galaxies lack dark matter

Last year, astronomers were flabbergasted when they discovered a galaxy almost entirely devoid of dark matter. As the first galaxy ever found lacking the elusive substance — which is thought to account for 85 percent of the universe’s mass — the find left some researchers delightfully intrigued, and others understandably skeptical. “If there’s [only] one object, you always have a little voice in the back of your mind saying, ‘But what if you’re wrong?’” said astronomer Pieter van Dokkum of Yale University, who led last year’s groundbreaking study, in a press release. “Even though we did all the checks we could think of, we were worried that nature had thrown us for a loop and had conspired to make something look really special whereas it was really something more mundane.” Now, in…