Astronomy

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DID A BLACK HOLE TRIGGER A SUPERNOVA?

A farewell to Jim Lovell

Two Gemini and two Apollo flights cemented this trailblazing astronaut’s place in history.

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• COMET HALE-BOPP REMEMBERED • CELEBRATING HUBBLE’S ANDROMEDA GALAXY • HOW THE ELEMENTS CAME TO BE • COMPLETE SKY EVENTS COVERAGE

5 GREAT REVOLUTIONS IN ASTRONOMY

WHY WE SEE STRANGE THINGS IN THE SKY

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Variable stars.

QI HOW DID A CEPHEID VARIABLE STAR HELP EDWIN HUBBLE PROVE THE ANDROMEDA NEBULA WAS A GALAXY? Roger Brady San Quentin, California A I Cepheids are rare variable stars with periods ranging from about 1 to 120 days. Their light curve — a chart showing...

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Go to www.Astronomy.com for info on the biggest news and observing events, stunning photos, informative videos, and more. The Space Store Perfect gifts for your favorite science geeks. News The latest updates from the science and the...

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OBSERVE THE BRIGHTEST DEEP-SKY OBJECTS

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HOW ARTEMIS WILL TAKE US BACK TO THE MOON

EXPLORE CASSIOPEIA’S DEEP-SKY TREASURES WEBB TELESCOPE REVEALS THE DISTANT UNIVERSE IS IT DO-OR-DIE TIME FOR PLANET NINE? ZWO SEESTAR SCOPE REVIEWED

THE UNIVERSE’S EXPANSION

WHY WE SHOULD RENAME THE HUBBLE CONSTANT

EVERYTHING WE KNOW ABOUT THE SUN

The world’s best-selling astronomy magazine

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10 GREATEST MYSTERIES OF THE COSMOS

WHETHER YOU REALIZE IT OR NOT, YOU’RE PART OF A REVOLUTION. Let me explain. In the past, ideas to interpret the nature of things developed slowly. Before there was astronomy, there was astrology, attempting to divine mystic meaning from the motions of...

LIGHT POLLUTION

ON A CRISP NIGHT LAST FALL IN THE ARIZONA DESERT, I stood amid sand and scrub at the intersection of Valencia and Kolb on the outskirts of Tucson and beheld a gleaming gas station. To say that this coruscating beacon of convenience was well lit would...