Astronomy January 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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12 Issues

in this issue

2 min.
hot stories of the cosmos

One of the most exciting aspects of astronomy is that the most amazing discoveries usually are unexpected. Our annual special feature, “Top 10 Space Stories,” continues our tradition of investigating the biggest stories of the year. Astronomy magazine alumna Liz Kruesi, a freelance science writer in Texas, has once again compiled this look at an array of discoveries. The top story this year? In late 2017, a team led by physicist Francis Halzen, who directs the IceCube neutrino detector in Antarctica, discovered one of these elusive particles. When the neutrino passing through Earth interacted with thick ice, the IceCube team noted the particulars, and the event corresponded with an active galaxy. The source, the first outside our galaxy, was observed with the Fermi Gamma-ray Space Telescope. The team concluded this after researching…

2 min.
astro letters

A flat-out explanation My mind is still boggling over “What shape is space-time?” on p. 34 of the August 2018 issue. In five lucid paragraphs and three diagrams, Alison Klesman explains why, on current evidence, space-time appears to be flat, and how a triangle’s angles indeed sum, in real space, to 180°. Thanks for the revelation! — Robert Graber, Kirksville, MO Stellar starlings Jeff Hester’s articles are both insightful and thought provoking, and are always the ones I look forward to. Thus, I was pleasantly surprised when I found in the July 2018 issue his entry, “A murmuration of starlings.” This article touched me because recently, I had the pleasure of raising an orphaned starling chick to adulthood and witnessed firsthand what an amazing species of bird they are. Widely considered a pest,…

1 min.
encyclopedia galactica print

Astronomy Exclusive 30" x 21" The stunning Encyclopedia Galactica print is the compilation of a decades-spanning collaboration between artist Jon Lomberg and the late Carl Sagan. The print depicts our home galaxy as a network of civilizations at varying stages of advancement — a work of speculation based on solid science, rendered beautifully in Lomberg’s art and Sagan’s words. The magnificent 30” x 21” print is printed on high-quality paper, includes an informational flyer, and arrives rolled in a tube. Buy Now at MyScienceShop.com/Encyclopedia Sales tax where applicable.…

2 min.
the invisible carina nebula

The Carina Nebula (NGC 3372) is a massive star-forming region within the Milky Way, stretching more than 300 light-years across. In visible light, dust and glowing gas block the view of forming stars hidden within visually striking but dark clouds. But infrared instruments, capable of sensing heat, can penetrate the dust and gas to reveal what’s going on inside. Infrared images such as this tableau captured by the Visible and Infrared Survey Telescope for Astronomy, or VISTA, are helping astronomers better study the region. So far researchers have cataloged almost 5 million individual sources of infrared light within the nebula, identifying forming stars down to just a tenth of the Sun’s mass. Other, better-known features of the Carina Nebula include Eta Carinae, an intensely bright binary star system visible above the…

2 min.
tess releases first round of exoplanet candidates

DELAYED DEVELOPMENT. Jupiter’s growth into a giant planet was delayed for about 2 million years while it absorbed kilometer-sized rocks, which temporarily stifled the planet’s ability to accrete more gas. NASA’s Transiting Exoplanet Survey Satellite (TESS) has been scouring the skies for nearby worlds since it began science operations in July. Its first batch of data is now available to astronomers, and already dozens of new exoplanet candidates are awaiting follow-up data to confirm their existence. During its initial observing campaign, the mission studied 15,900 nearby stars. In 73 cases, TESS witnessed a brief dimming of light suggesting an object, such as a planet, passed in front of the star. But not all dips in starlight are caused by planets; other processes, such as starspots or variability, also can change brightness. And…

1 min.
the color of a meteor

NIGHT LIGHT. When a meteor streaks through the night sky, it will often emit a distinctive glow that can reveal a lot about its composition. But although the chemical makeup of a meteor plays a vital role in producing the color we observe, it’s not the only factor; the atmospheric molecules that a meteor barrels through also help determine the overall color of the streak. For example, ionized nitrogen and oxygen can glow with a blue, green-yellow, or reddish hue when energized. FAST FACT The term meteor (a noun) stems from the Greek adjective metéōros, meaning “raised from the ground, hanging, lofty,” which explains why meteorology has little to do with cosmic objects.…