How Did We Miss a Galaxy Orbiting Right Next to Us?

 

17 Sept 2026 ✪ Members first on 16 September 2026 #rubin #verarubinobservatory #galaxy
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Hello and welcome! My name is Anton and in this video, we will talk about a discovery of a practically invisible galaxy near Milky Way called Aquarius IV
https://arxiv.org/pdf/2608.02601
https://www.esa.int/ESA_Multimedia/Im…
#rubin #verarubinobservatory #galaxy

0:00 Discovery near the Milky Way
0:45 Why did it remain invisible?
2:35 How and where this was found
4:00 Unusual properties
5:50 Why does this matter for us?
7:50 Vera Rubin Observatory
9:30 How this may change what we know about Milky Way

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Patrick Favrel (@patleon.bsky.social) | by #Sfhir, #Rotterdam @sfhir

#StreetArt by #Sfhir, #Rotterdam @sfhir

— Patrick Favrel (@patleon.bsky.social) 2026-09-17T11:19:15.347Z

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Rebinding an old book

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USA (@usamailbox.bsky.social) | ✂️ “To Let Go or Not” — By #Malakkai in #Eslöv, #Sweden

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Scientists Can’t Agree On The First Ancient City

[…]

“Where and when did people build the first city?” sounds like a simple enough question. But archaeologists have been arguing about it for more than 70 years. Lots of people came up with the idea of cities, but for all kinds of reasons, they didn’t necessarily pull it off. Today, we’re going to explore the idea of why cities fail, and why living communally in cities isn’t inevitable for humans.

Hosted by: Hank Green (he/him) / Savannah Geary (they/them)

[…]

 

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stpforensic (@stpforensic.com) | These two mosaic portraits at Gatwick: at her 1953 Coronation, and at her 2012 Jubilee, are built from thousands of public photos.

A few days ago marked four years since Queen Elizabeth II passed. These two mosaic portraits at Gatwick: at her 1953 Coronation, and at her 2012 Jubilee, are built from thousands of public photos.A tribute made of the people themselves. 🕊️ #PhotographersOfBluesky #QueenElizabethII #PublicArt

— stpforensic (@stpforensic.com) 2026-09-16T16:12:45.905Z

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smooth operator at work

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Grimm‘s Illustrations (@grimm-illustrates.bsky.social) | …“pūkeko!”…

Added more paintings to my van! This blue fella is a pūkeko, a bird found throughout New Zealand. Their striking colours still have me yell “pūkeko!” when driving past a group- and I see them almost every single day! #birdart #vanlife #van #mural #illustration #painting #illustrator #newzealand

— Grimm‘s Illustrations (@grimm-illustrates.bsky.social) 2026-09-17T08:53:51.706Z

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The Fungus You Should Actually Be Worried About

18 Aug 2026 #learning #science #education
As the planet warms, a dangerous fungus called cryptococcus has been adapting to higher temperatures. That isn’t great for humans because our body heat is one of our primary defenses against the pathogen. Duke researcher Asiya Gusa studies how this fungus is changing, and her work may help prevent an outbreak of infections.

Hosted by: Hank Green (he/him) and Madelyn Leembruggen (she/her)

[…]

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Cloud perfectly shaped and align[ed] with a tree

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Ian Paul Sieren (@ianpaulsieren.bsky.social) | Shifting Assets Artist: Linda Wysong

Shifting AssetsArtist: Linda WysongOaks Bottom Wildlife ReserveSellwood-Moreland, Portland, OR#pdx #sculpture #publicart

— Ian Paul Sieren (@ianpaulsieren.bsky.social) 2026-09-17T04:11:57.655Z

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Nicolas Robert (@robertsnickc.bsky.social) | by Abraham 01 in #Hastings, Sussex #art

#Streetart by Abraham 01 in #Hastings, Sussex #art

— Nicolas Robert (@robertsnickc.bsky.social) 2026-09-17T12:35:43.477Z

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