21–40 of 526 results
Comet 3I/ATLAS closeup

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All Eyes on Interstellar Comet 3I/ATLAS

An alien comet will soon depart from the Sun's glare and enter the morning sky. It may be even brighter than expected, so get ready for the observing opportunity of a lifetime.

Orionid composite 2015-2022

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Dip a Toe in the Orionid Meteor Stream on Oct. 20-21

Circumstances are ideal for watching debris from Halley's Comet set the morning sky ablaze.

Comet Lemmon on September 26th

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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.

Nova Cen early image

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Australian Astronomer Discovers Back-to-back Novae!

John Seach hit the jackpot, discovering novae in both Centaurus and Sagittarius within a day of each other.

Titan shadow transit September 4, 2025

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Last Call for a Remarkable Titan Shadow Transit

Titan joins its shadow for a "grand finale" this October.

Comet SWAN25B

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New Comet SWAN (C/2025 R2) Pops Out from Behind the Sun

Ukrainian amateur discovers a bright, new comet now in the evening sky.

Comet Lemmon Aug. 25, 2025

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Sweet Prospects for Comet Lemmon (C/2025 A6)

A promising comet could reach naked-eye brightness next month. Here's how to track it.

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The Mystery of Leslie Peltier's "Two Tiny Diamonds"

How a determined amateur astronomer may have hit on the identity of a Cepheid variable double star described by a beloved author.

Perseid in bright moonlight

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Moon or Not, the Perseid Meteor Shower Is On!

Sure, the Moon will be a problem. But clouds are worse. Don't miss one of the best meteor showers of the year.

Watching the Southern Delta Aquariids

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Thumbs Up for the Delta Aquariid Meteor Shower

Meteor-watchers will be busy this month and next. Not only are the Southern Delta Aquariids peaking soon, but they get a boost from additional minor showers.

Comet 3I/ATLAS amateur view

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Rare Interstellar Comet Buzzes Solar System

A newfound comet from a remote star system may become bright enough to see in amateur telescopes this November.

Double Novae image V632 Lupi and V572 Velorum

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See Dual Naked-Eye Novae, a Rare Cosmic Coincidence

What's rarer than a naked-eye nova? Having two of them at the same time!

Georgia bolide June 26, 2025

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Exploding Fireball Drops Meteorites Over Georgia

Space rocks pelt Georgia after Thursday's thunderous bolide.

2-day-old crescent

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Explore June's Dusky Crescent Moon

The Moon returns to the evening sky this week to show off its elegant crescent and invite us to tour its nightside.

Nova Lupi (V462 Lupi) June15

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Bright Nova Lights Up Lupus Constellation

A newly-discovered nova in Lupus is on the rise and approaching naked-eye visibility. Here's how to see it.

Smoky Strawberry Moon

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When Wildfires Imperil Our Night Skies, See Double and Variable Stars

As wildfire season expands, observers across much of the country try to make do.

Aurora reflections

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Major Flare Could Spark Severe Geomagnetic Storm Sunday Night, June 1st

Tips for viewing tonight's hoped-for aurora whether your skies are clear or smoky.

Milky Way snow globe

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The Milky Way Returns to the Night Sky in a Tide of Starlight

The summertime Milky Way ascends in the east on May nights. Find a dark sky and let it take you away!

M40 up close

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The Twisted Path to Unconfounding "Double Star" Messier 40

The story of Messier object No. 40 not only makes for a great yarn, but it also demonstrates the haphazard nature of scientific progress.

Titan and its shadow Feb. 24, 2009

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Titan Shadow Transit Season Underway

Titan shadow transits are rare, occurring only about every 15 years. Don't miss the chance to see one this observing season.