Features

Two by Two They Came

Intriguing double craters, radar images of nearby asteroids, and the discovery of a moon circling Ida all point to a solar system teeming with double asteroids.

Journey to the Heart of the Sun

Travel with a photon from the Sun’s core to its surface and discover what forces rule our star.

The Mountains of Io

Fifteen-year-old Voyager photos meet modern computer techniques to bring a fresh look at Jupiter’s volcanically active moon.

Sky Almanac

Turn your eye, and a telescope, to the sky to see Saturn dominating the evening sky and Venus and Jupiter shining brilliantly before dawn.

Big Scope Observing

A 25-inch telescope captures faint targets deep in space and reveals incredible detail in bright objects.

Discover the Red Planet

Unpack your scope and grab this guide to observe our celestial neighbor this winter.

Sailing the Sea of Serenity

Craters young and old, distinct rilles and scarps, and towering mountains ringing the shore offer a smorgasbord of visual delights for backyard observers of this lunar sea.

Build a 10-Inch Portascope

It’s big, it’s portable, and it can be yours. Here’s how to build a deep-sky observer’s dream scope.

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