cafuego 🔭🤦🏼‍♂️9h ago

Centaurus A

A relatively nearby galaxy, which is visible as a smudge in binoculars if you know where to look.

In radio light, it is the brightest thing in the sky, screaming static at us. The accretion disk around its central black hole is shooting out jets of super hot gas, which are radio-loud. I don’t have enough data in this set of images to make those jets visible. That’s on the todo list :-)

This is three hours of data during a new Moon, when the sky was nice and dark.

RC61, 294MC Pro, AM5.

#astrophotography #space #astrodon

Nico Lasaigues10h ago

Una resonancia orbital es cuando los cuerpos ejercen una influencia gravitacional periódica y regular entre sí.

Por ejemplo, dos planetas que orbitan una estrella estarían en una resonancia 2:1 cuando uno de ellos tarda el doble que el otro en orbitar la estrella.

https://hipotesisdenemesis.wordpress.com/2026/03/27/resonancia-orbital/

#Astrodon #HipótesisDeNémesis #Astronomía

Resonancia orbital

Los planetas orbitan alrededor de sus estrellas madre separados por distancias enormes. En nuestro sistema solar, los planetas son como granos de arena en una región del tamaño de un campo de fútbo…

Hipótesis de Némesis 👾
Daniel Pomarède11h ago

From the AIP History Weekly Newsletter:

The Observatory Pinafore and the changing place of women in Harvard astronomy

https://www.aip.org/history/observatory-pinafore

#WomenInScience #AIP #History #WomenInSTEM #AIPHistory #Harvard #observatory #HarvardObservatory #science #HistoryOfScience #Astrodon #Astronomy

The Observatory Pinafore and the changing place of women in Harvard astronomy

AIP History Weekly Edition: March 27, 2026

AIP
REBOUND Citation Bot17h ago
A new paper by Kitazato et al. has cited REBOUND:
Surface rejuvenation of stony near-Earth asteroids triggered by planetary shadows https://ui.adsabs.harvard.edu/abs/2026NatGe..19..247K/abstract #nbody #astrodon
ESO18h ago

In the future, we might see one million more satellites in Earth's orbit. The consequences to astronomy would be devastating.

Fighting for a fair and sustainable usage of space, for astronomy and humanity — that's Betty Kioko's job as ESO’s Institutional Affairs Officer.

Learn more about her job and what ESO is doing in this direction: https://www.eso.org/public/blog/betty-kioko/

#astrodon #astronomy #astrophysics #space #science #environment #sustainability

REBOUND Citation Bot18h ago
A new paper by Winter et al. has cited REBOUND:
On the spin-orbit phase-space of an artificial satellite https://ui.adsabs.harvard.edu/abs/2026EPJST.234.7935W/abstract #nbody #astrodon
Starry Time Podcast1d ago

#JWST (left) & #Hubble (right) image mashup of #Saturn 🤩 🪐

📷 :https://flic.kr/p/2s3WExM

#planet #astrophotography #space #science #astrodon #astronomy #saturn #SolarSystem #NASA #ESA

REBOUND Citation Bot1d ago
A new paper by Madeira et al. has cited REBOUND:
Do self-gravitating hard-sphere disk simulations form Darwin ellipsoids? https://ui.adsabs.harvard.edu/abs/2026EPJST.234.7787M/abstract #nbody #astrodon
REBOUND Citation Bot1d ago
A new paper by Boskovic et al. has cited REBOUND:
Particle dynamics in TOI-178 planetary system https://ui.adsabs.harvard.edu/abs/2026EPJST.234.7739B/abstract #nbody #astrodon
Particle dynamics in TOI-178 planetary system

The TOI-178 system hosts six planets with five of them locked in a 2:4:6:9:12 Laplace resonance chain. We perform N-body simulations to investigate the dynamics of test particles in this system. We observe that co-orbital regions around each planet are approximately 30% wider than predicted by classical theory for planets in the resonance chain, while TOI-178b, which lies outside the chain, shows a 52% enhancement. The region between TOI-178e and TOI-178f reveals Kirkwood gap-like structures created by mean-motion resonances with TOI-178f (4:3, 5:4, 6:5) and TOI-178g (5:3), where particle clearing occurs on 500-year timescales. An extended integration of the innermost region (0.015─0.025 au) shows periodic inclination oscillations with period 196 years, coincident with TOI-178b's own oscillation period, with maximum amplitude occurring near the 3:2 resonance location. These structures are consistent with the system's resonant architecture and provide a baseline characterization that enables future comparative studies of similar phenomena in other multi-planet systems with resonant configurations.

ADS
Daniel Pomarède1d ago

Spot the Viscacha

Somewhere in this image of NSF-DOE Vera C. Rubin Observatory is a viscacha - a rabbit-like rodent related to chinchillas. The furry creature is well-camouflaged for the foothills of the Chilean Andes surrounding Rubin.

Credit: NSF–DOE Vera C. Rubin Observatory/NOIRLab/SLAC/AURA/I. Sullivan

https://noirlab.edu/public/images/XS205018-CC/

#Viscacha #RubinObservatory #Chile #Andes #ChileanAndes #Astronomy #Astrodon #science #photography #Chinchilla #rabbit