Mastodawn

The revised analysis does not fully rule out #Europa plumes, but it substantially weakens the original #HST #Lyα evidence. After accounting for Europa’s extended #hydrogen #exosphere and improved background modeling, the previously reported localized excess emission is no longer statistically compelling.

📝 https://doi.org/10.1051/0004-6361/202659406

🧵2/2

#PlanetaryScience #SpacePhysics #Spectroscopy #Jupiter

Fabrizio Musacchio 1d ago

🌖🔭Roth, Retherford, Saur et al revise their 2014 paper: In a reanalysis of 23 #HST/ #STIS #Lyα observations, the authors revisit & revise their earlier #Europa water plume interpretation.

With improved disk positioning & inclusion of a #hydrogen-#exosphere model, the previously reported localized Lyα excess becomes substantially less significant & may be consistent with noise. The data instead robustly support a persistent atomic H exosphere.

🧵1/n

#PlanetaryScience #SpacePhysics #Spectroscopy

Khurram Wadee ✅2d ago

#NGC1300: #BarredSpiralGalaxy
#Astronomy #Picture of the Day

https://apod.nasa.gov/apod/ap260517.html

#APOD #Spiral #Galaxy #HST

Khurram Wadee ✅2d ago

#NGC1300: #BarredSpiralGalaxy
#Astronomy #Picture of the Day

https://apod.nasa.gov/apod/ap260517.html

#APOD #Spiral #Galaxy #HST

APOD: 2026 May 17 – NGC 1300: Barred Spiral Galaxy

A different astronomy and space science related image is featured each day, along with a brief explanation.

Documentally 4d ago

This week’s dispatch is out there waiting to be found.

But it won’t be employing any nefarious tactics to grab your attention. You have to hunt it out amongst all the other multimedia offerings cluttering the web.

Actually… that sounds like more work than most care for. So I’ll just include this link and hope you’ll click on it and bathe in a curatorial goodness algorithms struggle to imitate. https://open.substack.com/pub/documentally/p/notes-from-the-resilient-life-575
#Writing #Film #HST

Notes from the Resilient Life [575]

Greetings from The Borders...

Documentally

Jonathan Dresner May 8

"I’m not one of these people who, rightly or wrongly, thinks that the atomic bombing of Japan is a moral referendum for the honor of the United States. ... “What exactly did Harry Truman know and not know about the atomic bombings?” is the kind of question that appeals to me, and as the book indicates, I think you get a very different answer to a lot of other questions once you ask it."

https://www.aip.org/history/q-a-wellerstein-nuclear-history

#Historiography
#USHistory
#HST