My first solo book presentation at a packed #Planetarium in #Bochum. Honestly, I was a bit nervous at first, since you never know how people react, but it went very well. I had a great time, got wonderful feedback and all available books were sold. Lots of questions afterwards. So, that was a good start for the book tour 😅

„Zwischen Urknall und Apokalypse“

Next stop: Planetarium Hamburg https://www.planetarium-hamburg.de/de/veranstaltungen-tickets/details/heino-falcke-zwischen-urknall-und-apokalypse

#astronomy #astronomie #astodon #astrophysics #buch

Distant galaxies reveal hidden effect from Big Bang: With these data, they observed a decrease in the radio emission which matches prediction from the supernovae electrons interacting with the Cosmic Microwave Background photons.

https://www.physics.ox.ac.uk/news/distant-galaxies-reveal-hidden-effect-big-bang

Something for the specialists perhaps, but nice to see evidence for this effect (we have been talking about for ages).
#astronomy #astodon #astrophysics #radioastronomy

Distant galaxies reveal hidden effect from Big Bang

Physicists at the University of Oxford have found the first compelling observational evidence that the Cosmic Microwave Background – the faint afterglow of the Big Bang – affects radio signals from distant galaxies.

University of Oxford Department of Physics

Eins der Dinge, die ich in meinem Buch erwähne, ist meine tolle persönlich Erfahrung mit Rai Weiss, der diese Woche verstorben ist:

▶️ https://news.mit.edu/2025/professor-emeritus-rainer-weiss-dies-0826

Ich wünschte, ich müsste nicht die Änderungen einbauen, die nun anstehen - aber ich bin auch beeindruckt, dass heute früh direkt eine Mail von meinem Lektor im Postfach war, mit der Frage, ob wir die letzten Tage vor dem Druck noch dafür nutzen sollen, den Text entsprechend zu ändern :(

Die Welt ist ein bisschen ärmer geworden.

#astodon

Professor Emeritus Rainer Weiss, influential physicist who forged new paths to understanding the universe, dies at 92

MIT Professor Emeritus Rainer Weiss, a renowned experimental physicist and Nobel laureate whose groundbreaking work on the Laser Interferometer Gravitational-Wave Observatory (LIGO) confirmed a longstanding mystery about the nature of the universe, has died at 92.

MIT News | Massachusetts Institute of Technology

And in today’s who’s got two thumbs and didn’t pay attention during target framing, it’s my Sculptor Galaxy (aka the Silver Dollar aka NGC253) with globular cluster NGC288 right on the edge and not slightly over where they would’ve made a lovely pairing.

There was some thin cloud, so I can have a better go with better framing when the next set of rainy and cloudy nights finishes. In october or something.

 
 #space #astrophotography #astodon

@enigmatico sadly neither #Astodon nor #GlitchSoc support #LaTeX for displaying formulae ...

Variations in the magnetic field at Jupiter’s so-called "Great Blue Spot" - a region of intense magnetic field along its equator first spotted in observations from NASA’s Juno spacecraft - are reported in a new study just published in Nature. This analysis may provide insights into the gas giant’s interior.

https://www.nature.com/articles/s41586-024-07046-3

#Jupiter #NASAJuno #NASA #spacecraft #planet #planets #space #physics #astrophysics #astronomy #astodon #space #science #research #STEM #nature #news

A rapidly time-varying equatorial jet in Jupiter’s deep interior - Nature

An axisymmetric, equatorial jet in Jupiter’s interior has a wavelike fluctuation with a 4-year period, revealing hidden aspects of the magnetic field within the metallic hydrogen region and constraining the dynamo that generates the magnetic field.

Nature

A search for dwarf galaxies in the Local Void, using data of the DESI Legacy Imaging Surveys

by Igor Karachentsev and co-authors

https://arxiv.org/abs/2312.04930

📷 Images of 12 new dwarf galaxies from DESI Legacy Imaging Surveys found in the Local Void region. Each image size is 2′ × 2′. North is to the top and East is to the left.

#galaxies #dwarfgalaxies #localvoid #void #voids #desi #survey #desisurvey #cosmology #cosmography #astronomy #astrophysics #astodon #space #science #research

A search for new dwarf galaxies outside the nearby groups

We undertook a search for new nearby dwarf galaxies outside the known groups in the Local Volume using the data on DESI Legacy Imaging Surveys. In a wide sky area of $\sim$5000 square degrees directed toward the Local Void, we found only 12 candidates to nearby low mass galaxies. Almost all of them are classified as irregular or transition type dwarfs. Additionally, we examined areas of the sky exposed with the Hyper Suprime Camera of the Subaru telescope ($\sim$700 square degrees) and found nine more candidates to nearby dwarfs. Finally, nine candidates to the Local Volume were selected by us from the Zaritsky's SMUDG catalog that contains 7070 ultra-diffuse objects automatically detected in the whole area of the DESI surveys. We estimated a fraction of quiescent dSph galaxies in the general cosmic field to be less than 10 percent.

arXiv.org

Trying to work out how/where to add a Mastodon verification link to a Jekyll site and not finding much from searches.

Any suggestions more than welcome

#astodon #verifrication #

@AstroKatie Of course, Mastodon can’t be better than Twitter before Elon. That will take a few years, but it is good enough for now and the basic idea seems valid. (I would still like to retoot with comments though) #astodon