Astronomy Pictures: Sky & Telescope's Online Gallery

Titan with its shadow on Saturn

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Astronomy Pictures: Sky & Telescope's Online Gallery

Titan's shadow on Saturn

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Jupiter from NASA

Pro-Am Collaboration

How to Measure Jupiter's Deflection of Starlight

Get involved in an extraordinary experiment to test Einstein's theory of General Relativity — and you can do it from your backyard.

Astronomy & Observing News

A Picture-Perfect Solar Eclipse Experiment

AAS Chambliss Award winner Donald Bruns explains how he confirmed Einstein's predictions during the 2017 total solar eclipse.

Reference fields for relativity test

Sky & Telescope Magazine

My Do-It-Yourself Relativity Test

Here's an update on an amateur astronomer's amazing effort to prove that Einstein really was right during next year's total solar eclipse.

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