Prime Focus Spectrograph Receives Hawaiian name ʻŌnohiʻula
ʻŌnohiʻula embodies the idea of perceiving the realm of our origins, honoring the people and land of Hawaiʻi and expressing a commitment to exploring the Universe together with the local community.
https://www.ipmu.jp/en/20251223-PFS
#SubaruTelescope #Maunakea #Hawaii #Astronomy #Astrophysics #Astrodon #science #news
A new paper by Raducan et al. has cited REBOUND:
Multiple moonlet mergers as the origin of the Dinkinesh-Selam system https://ui.adsabs.harvard.edu/abs/2025NatCo..1611033R/abstract #nbody #astrodon
Lowers Nebula
It is not called this because it is lower in the southern hemisphere sky than Orion. Or is it?
It’s red, and therefore it’s hydrogen being all excited courtesy of ultraviolet light from hot young stars. That’s just how the universe rolls.
70 x 300 seconds with the :wo_redcat_61: and :zwo_294mc: and 6nm narrowband Ha/[OIII] duo filter.
#astrophotography #space #astrodon
Thanks to the Labour Party, if I have any gap in my employment when my contract ends in twelve months, I’m going to have immigration trouble (which will also cost me thousands of $). If anyone is hiring…
I didn't realize that Tübingen University posted a whole news about my last PhD student there graduating this summer. Nice!
Somedays you just want to appreciate #Pluto -- for me, today is one of those days!
📷 - Pluto in True Color: https://www.jpl.nasa.gov/images/pia19857-pluto-in-true-color/
#astrophography #JPL #NASA #space #science #astrodon #astronomy #SolarSystem
1/2 🧵
Here’s the recently released sequence of Phobos passing over a Martian dust storm near Pavonis Mons.
Video & full info: https://flic.kr/p/2rNN8wk
Credit: ESA/ @DLR /FUBerlin/AndreaLuck CC BY
ESA Mars Express HRSC
300 MP Photo: https://fosstodon.org/@andrealuck/115758026625208427
Easy zoom: https://easyzoom.com/image/674026
Made with @GIMP as always
Playing with IR-pass filter (748+ nm) whilst waiting for dark. 10msec of Moon and 1 minute of Saturn (with ridiculous Moon reflections)
The Witch Head Nebula 🧙♀️
It sits next to bright Rigel in Orion. You can see a little bit of the star glow at top right.
Being a reflection nebula, this thing doesn’t glow in pink or blue like emission nebulae do. All you’re seeing is star light bouncing off “dust”. Which is this case is more
like smoke; very fine particles mixed in with the usual gas.
If you look carefully, you’ll see a scattering of background galaxies dotted around the image.
Turns out the objects in a supernova star system can take quite the pounding, blasted nubbins could be orbiting stellar remnants with exotic surfaces like our lemon friend from the previous post.
Wild to think that 'invaders' from the nearby galaxy of the Large Magellanic Cloud are shooting through the Milky Way!
https://www.astronomy.com/science/can-a-binary-companion-survive-a-supernova-blast/
#Astrodon #Space #HypervelocityStars #Astronomy #LargeMagellenicCloud
When is an Exoplanet not really a planet? When it's PSR J2322-2650b
It might be the remnant of the primary's much smaller companion, a red dwarf star with much of itself blasted away while it's primary was in it's violent giant and supernova phase.
Amazingly a nubbin of the Companion can survive all that and be classed as a 'planet' rather than a 'star', at least that's how I understand it from this article.
https://www.astronomy.com/science/jwst-discovers-a-strange-exoplanet-that-orbits-a-pulsar/
#MPSGoettingen wishes you happy holidays and a healthy and successful New Year 2026!
Featuring prominently on our season's greetings card: the first images of the Sun's south pole 🛰️ ☀️
During its flyby of the Sun at the end of March this year, the Solar Orbiter space probe had its first clear view of our star's poles. Solar Orbiter's trajectory has recently been tilted 17 degrees relative to the Sun's equator, allowing measurements from this unique perspective for the first time. As the new observations impressively show, the magnetic field at the poles is currently in a state of turmoil.
In addition to the images of the sun's south pole taken by the Solar Orbiter spacecraft, the past year has brought us many other highlights: exciting scientific results and important awards. Read more at https://www.mps.mpg.de/en/season-s-greetings-2025
#2025 #wrapped #wrapped2025 #Jahresrückblick #SolarOrbiter #Sun #Space #SolAustralisIncognitus #2026 #NewYear #Goettingen #Astrodon
A new paper by Zolotarev & Shustov has cited REBOUND:
On the mass indices of meteor bodies https://ui.adsabs.harvard.edu/abs/2025IAUS..374...70Z/abstract #nbody #astrodon
A new paper by Shustov & Zolotarev has cited REBOUND:
Dynamic evolution scale of NEA population: dependence on the initial orbital parameters https://ui.adsabs.harvard.edu/abs/2025IAUS..374...39S/abstract #nbody #astrodon
May your days be merry and bright :hearthands:
📷 : https://esawebb.org/images/potm2512a/
#astronomy #astrophotography #space #science #astrodon #ESA #NASA #JWST #stars #HolidaySeason #Holiday
A new paper by Liu et al. has cited REBOUND:
Double Hot Jupiter Formation through Mirrored ZLK Migration in Binary Star Systems: The Case of WASP-94 https://ui.adsabs.harvard.edu/abs/2025arXiv251218108L/abstract #nbody #astrodon
After yesterday’s abject failure, today is a glorious success!
Other than the eagle and the swan nebula, there are two other birds relatively close in the sky; the Seagull and Duck (aka Thors Helmet)
They are not close enough to get in a single frame, but I can just fit them in a two panel mosaic, like so.
However, they are not the same. The Seagull is mostly a giant cloud of hydrogen fueling star formation, whilst the Duck is filaments of gas expelled by a monstrous Wolf-Rayet star that will soon explode.
All of this sits in Canis Major, not terribly far from Sirius.
Also notable is that these are Gum 1, 2, 3 and 4, as classified by aussie astronomer Colin Gum.
Two 24 x 300 second exposure panels with :wo_redcat_61: :zwo_294mc: stacked and stretched with @Siril_Official
