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October 2023

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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JWST image of the Pillars of Creation
Stars

If protostars aren’t yet generating light through fusion, how can JWST see them?

The Sun provides necessary energy for life on Earth, thanks to its powerful but compact core, which takes up just 1/50 our star’s volume.
Science

Strange Universe: Astounding fundamentals

Anyone can get started with observing, thanks to the Astronomical League’s programs. Here, the author peers through her telescope in the twilight.
Observing Basics

Observing Basics: Supercharge your observing

Crisscross Cassiopeia the Queen to find the constellation’s characteristic clusters.
Deep-Sky Objects

Binocular Universe: Queenly clusters

The wide-field view of the Cygnus Loop was taken with the WIYN 0.9-meter at KPNO.
Deep-Sky Objects

Secret Sky: Fleming’s Triangular Wisp

Deep-Sky Objects

Explore these three great nebulae

A frame from the Illustris Simulation
Cosmology

What is the cosmic web made of?

Artist concept of Cassini crashing into Saturn
Alien Life, Solar System

Why was Cassini crashed into Saturn to prevent contamination if Huygens intentionally landed on Titan?

Exoplanets

Where is our solar system’s super-Earth?

Annular solar eclipse
Observing

Sky This Month: October 2023

Science

JWST reveals Cas A’s tangled web of debris

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