SUNSET: 
ASTRONOMY & OBSERVING NEWS
Explaining the Odd Behavior of Interstellar Object 'Oumuamua
It wasn't aliens after all — an astrochemist and an astronomer have teamed up to explain why the interstellar object 1I/'Oumuamua behaved the way it did.
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observing guides
Where to Look Tonight
This Week's Sky at a Glance, March 17 – 26
This Week's Sky at a Glance, March 17 – 26
The crescent Moon visits Venus. The Orange Triangle turns nearly equilateral. And as evening grows late, Arcturus begins to dominate the low northeast. It's turning spring.
where to lookMarch: The Winter Hexagon
Sky Tour Podcast
As the Northern Hemisphere edges toward the March equinox and beyond, stargazers have an abundance of brilliant stars overhead as darkness falls. Anchoring the celestial parade is Orion, the Hunter. Download or listen to this month’s Sky Tour to learn about — and how to spot — the Winter Hexagon of big, beautiful winter stars.
Subscribe NowSucker Holes
Sucker Holes
When skies are cloudy, sucker holes may offer us a view — albeit often only a brief one — of the universe overhead.
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Stargazing in Northumberland at Stonehaugh Observatory
Hexham NE48 3DZ, United Kingdom
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Stargazing in Northumberland at Stonehaugh Observatory
Hexham NE48 3DZ, United Kingdom
Our Community
Astronomers often spend their time lost among the stars, but the science of astronomy and the hobby of stargazing are also communal affairs. So, don’t be a stranger—find a group to get involved with today!
Editor's PICKS
Two photos, two moments, the same place!
Photographer: Avani Soares
Photographer: Steven Miller
Massive Prominence, Small Sunspot
Photographer: Jim Militello
vdB 141 - The Ghosts of Cepheus
Photographer: Hal Heaton
M109 A Barred Spiral Galaxy in Ursa Major
Photographer: vjagannathan
Photographer: Bill Reyna
Photographer: Avani Soares
NGC 2634: The Calm before the Storm
Photographer: KuriousGeorge
Photographer: sydney
C/2022 E3 (ZTF) 12:26 UT Feb 16, 2023
Photographer: sydney
Photographer: Avani Soares
Photographer: Jim Militello
Comet C/2022 E3 (ZTF) 2023,Jan.23
Photographer: Pepe Chambó
comet C/2022 E3 (ZTF) in closest approach
Photographer: Alireza Vafa
Photographer: Alireza Vafa
The Trailing Comet C/2022E3 (ZTF)
Photographer: MSagermann
Photographer: parisabajelan
Comet C/2022 E3 (ZTF) 2023,Jan.21
Photographer: Pepe Chambó
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Sky & Telescope Magazine
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Issue Highlights
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Catching Cosmic Neutrinos
Govert Schilling
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The Great Edge-On Galaxy of Spring
Howard Banich
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The Past and Future of Star Names
Tony Flanders