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what-is-the-origin-of-the-letters-used-in-star-classification-why-didnt-astronomers-use-abcd https://www.astronomy.com/issues/2005/page/4/ 2005 Issue | Page 4 of 13 | Astronomy.com https://www.astronomy.com/uploads/2021/09/asy-20010522-00992-070.jpg InStock USD 1.00 1.00 stars article ASY 2023-05-18 2005-10-01 39897
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2005

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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Stars

What is the origin of the letters used in star classification? Why didn’t astronomers use ABCD?

Observing, Observing Basics

Glenn Chaple’s observing basics: How to navigate the heavens

Observing

Phil Harrington’s binocular universe: The Swan delights

Science

Has anyone used Voyager spacecraft images to measure stellar parallax?

Observing

Mars rules!

Science

November 2005 book reviews

Science

November 2005 resources

Exoplanets

Everything you need to know about exoplanets

Science

When the sky rained rocks

Observing

Phil Harrington’s binocular universe (November 2005)

Observing

Sunspot animation

Science

Numbers game

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Newer posts 1 2 3 4 5 6 … 13 Older posts

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