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À l’œil nu : Mars s’aligne avec Castor et Pollux les 10 et 11 avril 2025
Mars s’éloigne de la Terre mais reste remarquable à l’œil nu. Suivez sa trajectoire parmi les étoiles et observez le bel alignement formé avec les deux principales étoiles des Gémeaux !
Simulation montrant le ciel du 10 avril 2025 à 22h (heure de Paris). La planète Mars est alors parfaitement alignée avec Castor et Pollux.
Had to convince the language editor of my paper that "resting mass energy" is not equivalent to "rest-mass energy", it was tough.
[I mean: the language editor wanted to replace all "my" rest-mass energy with resting mass energy, and so I had to ask them to replace everything with the only possible formulation which was originally there..]
Amateur Astronomie foto van de dag: LDN 1320 Fall from Polaris. Foto info: https://www.aapod2.com #astronomie #sterrenkunde #fotografie #sterrenkijken #aapod #heelal #universum #sterren #astronomy
This week's sky at a glance, April 11-20. Very useful Sky & Telescope observing guide by Alan MacRobert. #AstroDon #Astronomy #Astro #Space #Astrophotography https://skyandtelescope.org/astronomy-news/observing-news/this-weeks-sky-at-a-glance-april-11-20/
Projeto em andamento: Galáxia do Cata Vento (Pinwhell) - M101
Fotografei por 6 noites, por enquanto empilhei os frames de 4 noites que fotografei em broadband (RGB). Próximo passo é integrar os frames que fotografei exclusivamente na faixa de emissão de Hidrogênio alfa (Ha).
'Hidden galaxies' could be smoking gun in universe riddle
https://phys.org/news/2025-04-hidden-galaxies-gun-universe-riddle.html
APOD from 2025-04-11
The ISS Meets #Venus
A video from Shoreline, Washington captured Venus and the ISS in daylight on April 5. Despite appearing similar in size, the ISS is much closer at 400 km away, while Venus is nearly 45 million kilometers distant.
HD image at https://apod.nasa.gov/apod/ap250411.html#space #astronomy #telescope #planet #earth
The #ISS Meets #Venus
#Astronomy Picture of the Day
A Messier marathon is an attempt, usually organized by amateur astronomers, to find as many Messier objects as possible during one night. #MostDiscussed #Astronomy https://www.mostdiscussed.com/article/400203
Two different astronomy teams’ data show the oldest known galaxy in universe has oxygen
Yes indeed, CubeSats in low earth orbit can monitor farms. Should they? #Astronomy #FallOut #Privacy
From: @ScienceScholar
https://mastodon.social/@ScienceScholar/114317502466197732
Today in: Is it #Art or is it #astrophotography … (both, ofc)
This is MeerKAT data along with #JWST inset looking into Sagittarius C
If you want to learn about the #astronomy & #mythology of the #constellation #Sagittarius — check out our #podcast here: https://starrytimepodcast.podbean.com/e/sagittarius-the-archer/
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