SUNSET: 
ASTRONOMY & OBSERVING NEWS
Astrophotography: Tips & Techniques
Demystifying Flat-Frame Calibration
Many astrophotographers skip flat fields because they seem complicated. But the flats can greatly improve your images — here's how to do them.
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observing guides
Where to Look Tonight
This Week's Sky at a Glance, June 11 – 19
This Week's Sky at a Glance, June 11 – 19
The crescent Moon passes Venus, Pollux, Castor, and Mars in the evening twilight. The Big Dipper hangs down; the Little Dipper floats up. And greet the "Betelgeuse of summer."
where to lookJune: Solar Eclipse & Colorful Stars
Sky Tour Podcast
June features long days and short nights in the Northern Hemisphere, so download our narrated Sky Tour astronomy podcast to make the most of the abbreviated dark hours after sunset. Special event: a partial solar eclipse on June 10th!
Subscribe NowWhat are the Phases of the Moon?
What are the Phases of the Moon?
The phases of the Moon are determined by the relative positions of the Moon, Earth, and Sun.
Read moreOur 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
Photographer: KuriousGeorge
Devil's Horns Power Sun Pillar
Photographer: Greg-Redfern
Photographer: Greg-Redfern
Chinese and International Space Station
Photographer: Philip Smith
Photographer: benjaminlaw
Photographer: Chirag Bachani
Solar Eclipse Over the Chesapeake Bay
Photographer: awhipple
Comet C/2020 T2 (Palomar) and M 3
Photographer: Pepe Chambó
Photographer: Mohammad Ranjbaran
Eta Carinae taken with a smart telescope
Photographer: dhein
Photographer: jason.dain
Multiwavelength image of sunspot
Photographer: athornett
Photographer: Joe
Photographer: Guillermo Abramson
Total Lunar Eclipse 2021 May 26
Photographer: Fred-Espenak
Nova V1405 cas outburst and dimming
Photographer: Eliot-Herman
Photographer: eastcoastastro
NGC 4435 and NGC 4438 - The Eyes
Photographer: Alson Wong
Photographer: Mike Olason
Photographer: Eliot-Herman
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Sky & Telescope Magazine
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Issue Highlights
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Relics of a Distant Past
J. M. Diederik Kruijssen
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Open Cluster Exoplanets
Greg Bryant
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Sparkles in the Dark
Ron Brecher
