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March 2020

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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49,86 kr.(Inkl. moms)
357,84 kr.(Inkl. moms)
12 Udgivelser


2 min.
remembering hubble

Launched in 1990, the Hubble Space Telescope became an instant fiasco in orbit. During in-orbit testing, astronomers immediately found that the 2.4-meter mirror was flawed. It had been figured incorrectly at Perkin-Elmer due to a lens in a testing instrument that was out of place by 1.3 millimeters. The world’s greatest space telescope became an instant boon-doggle and the butt of jokes on the late-night talk shows. In December 1993, the first servicing mission, using the space shuttle Endeavour, fixed the problem with a set of corrective optics. COSTAR, the corrective optics package, was supplemented with the Wide Field and Planetary Camera 2, which also had corrective optics and allowed for a series of magnificent images to be made. All was right again with the world’s greatest in-orbit telescope. On this 30th…

1 min.

Editor David J. Eicher Design Director LuAnn Williams Belter EDITORIAL Senior Editor Richard Talcott Production Editor Elisa R. Neckar Associate Editors Alison Klesman, Jake Parks Copy Editor McLean Bennett Editorial Assistant Hailey McLaughlin ART Contributing Design Director Elizabeth Weber Illustrator Roen Kelly Production Specialist Jodi Jeranek CONTRIBUTING EDITORS Michael E. Bakich, Bob Berman, Adam Block, Glenn F. Chaple Jr., Martin George, Tony Hallas, Phil Harrington, Korey Haynes, Jeff Hester, Alister Ling, Stephen James O’Meara, Martin Ratcliffe, Raymond Shubinski SCIENCE GROUP Executive Editor Becky Lang Design Director Dan Bishop EDITORIAL ADVISORY BOARD Buzz Aldrin, Marcia Bartusiak, Jim Bell, 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 Stephen C.…

2 min.
astro letters

Future astronomer I am 12 years old and want to be an astronomer one day. I am writing because I really like the Paths of the Planets chart in the November 2019 issue of Astronomy magazine. It shows a lot of information about the planets and where to find them in the night sky when they are most visible. I love looking at the night sky, and this magazine gives me plenty of information I can use to find space objects, and it helps me plan for what to expect in the days ahead. That is one of my favorite things about your magazine. —Zach Owens, Birmingham, AL What’s in a name … I was really motivated to send you this letter after reading Robin Canup’s article in the November 2019 issue, “The Moon’s…

1 min.
a ghostly space face

What at first appears to be a face with glowing eyes is actually a unique moment in time, captured by the Hubble Space Telescope. Galaxies grow and evolve through collisions. Although most smash-ups aren’t head-on, Arp–Madore 2026–424 apparently didn’t get the memo. In June 2019, Hubble took this visible-light snapshot of the cosmic crash in progress. The central regions, or bulges, of the galaxies glow brightly like a pair of supernatural eyes. Gas, dust, and stars in the galaxies’ arms have been yanked around by gravitational effects, forming a huge, bluish ring structure that serves as the head and nose. Cosmically speaking, ring structures like this don’t last long — only about 100 million years. As the merger progresses, the face will distort into unrecognizability. And in about 1 billion to 2 billion years,…

3 min.
is planet nine a tiny black hole?

The strange orbits of distant space rocks suggest there’s a 5- to 15-Earth-mass world dubbed Planet Nine lurking in the outskirts of the solar system. But now, a team of scientists is proposing something far stranger may be influencing the orbits of these distant bodies: a primordial black hole. Primordial black holes are believed to have popped into existence within the first few fractions of a second after the Big Bang. Their existence has yet to be confirmed. But, according to research posted September 24 to the preprint site arXiv, if primordial black holes exist, there’s no reason the solar system couldn’t have captured one whose gravity would mimic the effects of the proposed Planet Nine. And because black holes are incredibly adept at crushing down matter, the black hole equivalent…

1 min.
the ringed world wanders

A ZODIACAL JOURNEY. Saturn takes 29.5 years to circle the Sun, so it typically spends a lot of time in each constellation it traverses. It crosses from Sagittarius to Capricornus in March 2020, ending a 28-month foray through the Archer’s stars. But its longest stretch comes within the confines of Virgo the Maiden. The chart shows the percentage of time the ringed planet will reside in each constellation from March 2020 until it returns to the same position three orbits from now, in July 2108. FAST FACT Saturn’s orbit tilts 2.5° to the ecliptic, enough that it slices through two non-zodiacal constellations: Cetus and Orion.…