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Astronomy

Astronomy December 2014

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.

País:
United States
Língua:
English
Editora:
Kalmbach Publishing Co. - Magazines
Periodicidade:
Monthly
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ASSINATURA
US$ 42,99
12 Edições

nesta edição

2 minutos
join us for aurorae in norway

F or decades, Astronomy magazine has been in partnership with travel companies to bring you some of the most exciting places for astronomy in the world. And I’m very pleased to say we’ll be carrying on that tradition with a new partner, TravelQuest International, a company based in Prescott, Arizona, beginning in 2015. The founder and president of TravelQuest, Aram Kaprielian, began his involvement in travel when his father created a travel company in — believe it or not — Milwaukee (home of Astronomy)! Our first trip with Travel-Quest as partners will head to Norway to catch some beautiful displays of aurorae on October 5–15, 2015. For astronomy enthusiasts, this will be the trip of a lifetime. Stunning fjords ringed by snowcapped mountains. Deep blue waters reflecting the spires of medieval towns.…

2 minutos
the dawn of dark matter

EVERYTHING YOU NEED TO KNOW ABOUT THE UNIVERSE THIS MONTH . . . HOT BYTES TRENDING TO THE TOP ASTEROID ATTACK Moon models show bombarding space rocks reshaped Earth’s early surface, altered evolution, and melted oceans into steamy atmospheres. EARLY MERGERS Telescopes teamed to capture the best view yet of two galaxies merging in the early universe thanks to the lens of a space-distorting galaxy. IF A ROCK FALLS A Mars-orbiting satellite caught a massive boulder’s distinct track as it tumbled one-third of a mile (500 meters) down a martian hill. The idea that the universe is filled with a mysterious dark matter traces back to a brilliant Swiss astronomer named Fritz Zwicky. In a famous paper published in 1937, Zwicky proclaimed the discovery of dark matter, calling it dunkle Materie, and shared the observations he had made for some…

1 minutos
spiral masterpiece

The Pinwheel Galaxy (M33) in Triangulum ranks as the third-largest member of our Local Group, behind only the Andromeda Galaxy (M31) and the Milky Way. At a distance of nearly 3 million light-years, its roughly 40 billion suns glow just bright enough to show up to the naked eye under the darkest skies. The bright splashes of red that trace the galaxy’s spiral arms are clouds of mostly hydrogen gas collapsing to form new stars. Astronomers captured this image with the European Southern Observatory’s 2.6-meter VLT Survey Telescope on Cerro Paranal in northern Chile.…

1 minutos
from our inbox

The end of cosmology? In reading Francis Reddy’s interesting article “How the universe will end” (September, p. 38), I was struck by an odd thought. According to the author, observers 100 billion years from now will conclude that the universe consists of their galaxy existing in an empty and limitless void. This brings to mind the early Rapanuian people of Easter Island. From their viewpoint, the universe consisted of the sky, the limitless ocean, empty of any landmarks, and their island — Rapa Nui. How little man’s outlook on the cosmos has changed over the intervening years. In both cases, the fate of the universe is based on observation from a limited viewpoint — the island Rapa Nui or this island Earth. Take your pick. Thanks for an engrossing article. I…

4 minutos
it’s about time

New Year’s Eve is when the greatest number of people focus on time. But we astronomers are already more time-dependent than just about anyone. For example, variable-star enthusiasts expect Algol to plummet to its faintest once again on December 15 at 10:22 p.m. EST, distorting the constellation Perseus. Planet observers watch Saturn emerge from behind the Sun every 378 days and see Venus return as the “evening star” every 19. months. Both are happening now. This is history’s most optimum period to be time-aware because chronometers have achieved perfection. It started with the balance spring watch, created in 1675 by the same amazing Dutchman who first sketched the Orion Nebula and suggested Saturn’s rings, Christiaan Huygens. Accurate timekeeping further improved after the 1880 discovery that mineral crystals vibrate when zapped with…

1 minutos
midsize black hole confirmed

Astronomers so far know of two kinds of black holes: stellar-mass ones, which range in size from a few to 100 times the Sun’s mass and are the result of a massive star’s collapse, and the supermassive kind, those that are on average millions of solar masses and live in the centers of galaxies. But what about a midrange of mass, black holes a hundred to 10 thousand times the mass of the Sun? Although scientists theorized that such intermediate-mass black holes exist, evidence of them was hard to come by. While studying the brightest X-ray source in the starburst galaxy M82, however, researchers finally found their smoking gun. According to results published in the September 4 issue of Nature, astronomers have determined that the black hole M82 X-1 is 428…