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observing-basics-web-extra-explore-an-imperfect-moon https://www.astronomy.com/issues/2009/page/12/ 2009 Issue | Page 12 of 17 | Astronomy.com https://www.astronomy.com/uploads/2021/09/june-2009-moon-bc.jpg InStock USD 1.00 1.00 the-moon article ASY 2023-05-18 2009-04-27 35452
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2009

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 an easy-to-understand, user-friendly style that's perfect for astronomers at any level.
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The Moon

Observing Basics web extra: Explore an imperfect Moon

Science

In stellar magnitude estimates, why do larger numbers represent dimmer objects? Shouldn’t it be the other way around?

Galaxies

How do the bars in barred spirals form?

Observing

Free preview: Glenn Chaple’s Observing Basics, “An imperfect Moon”

Cosmology, Exotic Objects

Could large numbers of black holes account for much of the “dark matter” estimated to exist in our universe?

Solar System

Could the meteorite that formed the Hellas Basin on Mars have triggered the volcanic eruptions on the other side of the planet that created Olympus Mons?

Stars

Astro Confidential web extra: Extending the conversations

Observing

Astrocombing for exoplanets

Observing

Stephen James O’Meara’s Secret Sky: Fireballs from the Scorpion

Science

Bob Berman’s Strange Universe: How much solstice can you handle?

Science

Venus blazes before dawn

Science

Ask Astro web extra: What is the difference between astronomy and astrophysics?

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