Observing

The sky is always changing. Planets dance in the evening, stars explode as supernovae, and new comets grace dawn skies. Here we bring together all the tips and resources you’ll need to observe the glories that light up the heavens.

We have star maps, podcasts, and detailed guides for what’s in the sky tonight. Read senior editor Alan MacRobert’s column This Week’s Sky at a Glance to find out what’s visible and where and when to look. Or check out our pointers on seeing asteroids or spotting Uranus and Neptune. (Did you know you could do that?) Meteor showers, record-thin Moons, and even sunspots — here’s where you’ll find the latest on what’s happening in the sky, both day and night.

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This Week’s Sky at a Glance, April 18–26

Friday, April 18 Jupiter shines right under the big Arch of Spring this year. The Arch spans much of the western sky. Pollux and Castor form its top (as seen from mid-northern latitudes). To their lower left is Procyon, one end of the Arch. Farther to their lower right is the other end: Menkalinen...

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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.

Vic

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.