This Week’s Sky At a Glance

Check out Sky & Telescope’s weekly observing update, Sky at a Glance, published every Friday. Not only do we provide simple sky maps and observing tips for the upcoming week, we also keep you up to date on the latest celestial events.

A winter article might focus on the dazzling Orion Nebula, where thousands of stars are forming in the cloud of gas and dust, only 1,300 light-years away. A spring article could guide you through the small patch of sky in the constellations Cygnus, Lyra, and Draco where the Kepler Space Telescope has found more than 1,000 exoplanets. And a summer article might be bombarded with meteors from the stunning Perseids, which grace us with their presence every August, while a fall article might highlight the lucky alignment of two planets in the evening sky.

No matter the week, take a look at Sky at a Glance to catch up on celestial current events.

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This Week’s Sky at a Glance

The week's big event is the asteroid Erigone occulting Regulus, with a campaign to watch for a satellite of the asteroid too. Meanwhile, the waning gibbous Moon will pass Mars and Spica high at dawn.

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This Week’s Sky at a Glance

Jupiter is still about at its closest and largest of the year, rising high earlier in the night. The Moon waxes to full, so with a telescope this is a good time to specialize in a bright thing like Jupiter.

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This Week’s Sky at a Glance

After Comet ISON swung through perihelion on November 28th, all that's left of it is a fading, spreading debris cloud. Meanwhile, the rest of the heavens continue going about their business.

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This Week’s Sky at a Glance

Comet ISON reaches perihelion this week, making its hairpin barbecue pass around the Sun on Thursday the 28th. As the week begins, can you still detect it low in the brightening dawn? It'll likely be too faint, but Mercury and Saturn point the way.

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This Week’s Sky at a Glance

The bright Moon passes Jupiter and winter stars in the eastern evening sky. But there's greater excitement in the east just before dawn: Comet ISON is suddenly brightening up, and Comet Lovejoy glows high.