SUNSET: 
ASTRONOMY & OBSERVING NEWS
Hail-like “Mushballs” May Fall on All Our Giant Planets
"Mushballs," first inferred to exist on Jupiter, may fall within the atmospheres of all the solar system's giant planets.
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observing guides
Where to Look Tonight
This Week's Sky at a Glance, September 17 – 25
This Week's Sky at a Glance, September 17 – 25
The waxing gibbous Moon shines with Jupiter and Saturn on its way to full. And as summer turns to fall, Deneb replaces Vega as the zenith star after dusk.
where to lookSummer Triangle Overhead
Sky Tour Podcast
The calendar might say “September,” but now is the perfect time to explore the Summer Triangle. Find your way with this month’s Sky Tour podcast.
Subscribe NowHow to See Jupiter: Big, Bright, and Beautiful
How to See Jupiter: Big, Bright, and Beautiful
Jupiter, the King of Planets, is a captivating sight no matter how you look at it.
Read moreEditor's PICKS
Photographer: Steve Leonard
"Ptolemaeus, Alphonsus and Catena Davy"
Photographer: Fabrizio Antonucci
Photographer: Giancarlo Melis
Photographer: soumyadeepmukherjee
Large Solar Prominence - Sept 11, 2021
Photographer: Behyar Bakhshandeh
Photographer: Jeff
Photographer: KuriousGeorge
Photographer: Robert-Fields
Photographer: Ralph-Ford
Photographer: Joel
Photographer: KuriousGeorge
Pickering's Triangle in Veil Nebula
Photographer: Kevin-Boucher
Perseid Streaking past the Summer Milky Way
Photographer: astrorx
The Vela Supernova Remnant in Narrowband Light
Photographer: Hal Heaton
Photographer: KuriousGeorge
Photographer: Robert-Fields
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Issue Highlights
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A Golden Age for Amateur Astronomy
William Sheehan and Klaus Brasch
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Building the James Webb Space Telescope
Paul H. Geithner
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To Build or Buy?
Jerry Oltion