Get a Front-Row Seat to Io and Europa's Shadows Transiting Jupiter and Learn When You'll Be Able to See Two Bright Comets This Month

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Read news from the world of astronomy for the week of October 3, 2025.

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This week in the world of astronomy, learn how and when you'll be able to see two bright comets this month. Plus, get a front row seat to the interstellar comet from the Martian orbiters.

This Week's Sky at a Glance, October 3 – 12

In tonight's sky Vega is the brightest star very high toward the west. It's still almost overhead at nightfall; it descends as the hours pass.

Mars Orbiters Will Have Front-row Seats to Interstellar Comet

Spacecraft orbiting the Red Planet will aim a suite of instruments at Comet 3I/ATLAS to capture details about this enigmatic object.

Observing Highlights

Two Bright Comets Converge on Northern Hemisphere Skies

After a dearth of bright comets earlier this year, we look forward to an exciting month ahead.

Andromeda-Pegasus-inset-M31-label-web image

October Podcast: Pegasus Leads the Way

Pegasus is a large, distinctive constellation that’s easy to spot. During October, you can use it — along with Saturn — to find some amazing celestial sights in their vicinity.

Presented by: Celestron.

Black Holes: Space Warps, the Death of Stars, and More

Although black holes have become part of our movies and our everyday language, few people really understand the exciting science ideas behind the science fiction. You will learn how new instruments have allowed astronomers to detect the presence of these elusive dark objects.