ArticleCan robots save Earth orbit?
For decades, satellites have been designed to be discarded. Robotic servicers have the potential to change that, but they may need a push from human regulators. BROOKS MENDENHALL
Astronomy
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ArticleONLINE FAVORITES
Go to www.Astronomy.com for info on the biggest news and observing events, stunning photos, informative videos, and more.
ArticleCOVER STORY Our increasingly cluttered skies
As Earth’s orbital space becomes ever more crowded, collisions and debris threaten not only commercial assets and astronauts’ lives, but also safety and property on the ground. RANDALL HYMAN
ArticleWhat satellites leave behind
Metals from reentering objects are accumulating in the stratosphere in what amounts to an uncontrolled geoengineering experiment. KATE WHEELING
ArticleASTRONEWS
Everything you need to know about the universe this month: A black hole bigger than its galaxy, Tianwen-2 arrives at an asteroid, and AI attempts to spot lunar craters.
ArticleUncovering star clusters in other galaxies
Extragalactic globulars are hiding in your images. Here’s how to find them. ROD POMMIER
ArticleAsk Astro
Astronomy’s experts answer reader questions about nonspherical planets, a Sunblack hole size comparison, and more.
ArticleStar Dome and Paths of the Planets
RICHARD TALCOTT; ILLUSTRATIONS BY ROEN KELLY