Hanno Rein

@hannorein
1,034 Followers
714 Following
895 Posts
#Astrophysics Professor at the University of #Toronto, Minor Planet 12249, #UTSC, #UofT, developer of the several #iOS apps, #pilot, #cycling, #climbing, #running, #Egyptology, #woodworking, #astrodon.
Websitehttps://hanno-rein.de
Exoplanet Apphttps://exoplanetapp.com
ORCIDhttps://orcid.org/0000-0003-1927-731X
GitHubhttps://github.com/hannorein
Hanno Rein8h ago

RE: https://scicomm.xyz/@JohnBarentine/116296832763875772

Unpopular opinion: What if we don't restrict ourselves to do things that have "value".

Hanno Rein1d ago
jbz1d ago

🛰️ 'Miracle': Europe reconnects with lost spacecraft

｢ The lost spacecraft had been "tumbling" when an ESA team in Spain "saw that some sunlight is actually hitting the solar panels," Aschbacher explained.
They seized the chance, using this small amount of power to re-establish a connection.
The spacecraft's solar panel is now facing the sun, allowing it to charge its batteries ｣

https://phys.org/news/2026-03-miracle-europe-reconnects-lost-spacecraft.html

#science #space #esa

'Miracle': Europe reconnects with lost spacecraft

The European Space Agency announced Thursday it has re-established communication with a spacecraft that is part of its Proba-3 mission, after losing contact with the satellite a month ago.

Phys.org
Hanno Rein2d ago
Matthew Kenworthy2d ago
Delighted to see our WISPIT team announce the second directly imaged exoplanet from the WISPIT 2 system! Led by Chloe Lawlor (Galway) with Richelle van Capelleveen (Leiden), we also have a spectrum of the inner, more massive planet, showing carbon monoxide features. ☄ #exoplanet #astrodon https://www.eso.org/public/news/eso2604/
Hanno Rein2d ago

RE: https://mas.to/@gabrielesvelto/116284894996315843

This is why I like working on small N-body simulations. No amount of money you throw at more cores, GPUs, or "AI" can make them faster.

Hanno Rein3d ago
#CatsOfMastodon
Hanno Rein3d ago
Looks like Avenza Maps is going down the enshittification route. They will now charge $50/year to let you import maps.
Hanno Rein3d ago
Hanno Rein4d ago

@sundogplanets, Aaron Boley, and I have written an article in The Conversation Canada about the extremely stupid idea of putting a million satellites into orbit as AI data centres. We include some new simulations of how many satellites will be visible in the night sky if this goes ahead (left) compared to all the Starlink satellites already visible today (right). It's bad.

https://theconversation.com/a-million-new-spacex-satellites-will-destroy-the-night-sky-for-everyone-on-earth-277938

Hanno Rein3d ago
heise online3d ago

Eine Million SpaceX-Satelliten und Sonnenspiegel: Dramatische Appelle an die FCC

Eine etablierte US-Raumfahrtfirma und ein Start-up wollen viel mehr und noch hellere Satelliten ins All schießen. Die Folgen wären gravierend, wird gewarnt.

https://www.heise.de/news/Eine-Million-SpaceX-Satelliten-und-Sonnenspiegel-Dramatische-Appelle-an-die-FCC-11221181.html?wt_mc=sm.red.ho.mastodon.mastodon.md_beitraege.md_beitraege&utm_source=mastodon

#Astronomie #Forschung #Wissenschaft #news

Eine Million SpaceX-Satelliten und Sonnenspiegel: Dramatische Appelle an die FCC

Eine etablierte US-Raumfahrtfirma und ein Start-up wollen viel mehr und noch hellere Satelliten ins All schießen. Die Folgen wären gravierend, wird gewarnt.

heise online
Hanno Rein4d ago
It’s that day of the week again.
Hanno Rein4d ago

@sundogplanets, Aaron Boley, and I have written an article in The Conversation Canada about the extremely stupid idea of putting a million satellites into orbit as AI data centres. We include some new simulations of how many satellites will be visible in the night sky if this goes ahead (left) compared to all the Starlink satellites already visible today (right). It's bad.

https://theconversation.com/a-million-new-spacex-satellites-will-destroy-the-night-sky-for-everyone-on-earth-277938