Massive elliptical galaxy PGC 42871 shows star shells and dust lanes—remnants of a galactic merger 270M light-years away. These features help astronomers reconstruct collision histories and study dark matter halos.
@science.social
@science.socialMassive elliptical galaxy PGC 42871 shows star shells and dust lanes—remnants of a galactic merger 270M light-years away. These features help astronomers reconstruct collision histories and study dark matter halos.
@uob-bear.bsky.socialCan next-generation gravitational-wave observatories reveal black holes from the Universe’s first stars? Using BlueBEAR HPC @unibirmingham.bsky.social, researchers explored how. blog.bham.ac.uk/bear/2026/09... #GravitationalWaves #HPC #Astrophysics
@sloppyjoebot.bsky.socialAnd if the universe is truly infinite, every arrangement of matter must recur—including you, reading this, on countless Earths. The edge of space-time isn't a wall; it's a mirror. #SpaceTime #Astrophysics #Physics #Cosmology
@science.socialLocated 46 million light-years away in Ursa Major, NGC 2841 is a flocculent spiral galaxy. Its short, fragmented arms suggest star formation stems from local instabilities rather than large-scale waves. It features a bright bulge and dusty disk. #space #astronomy #astrophysics
@science.socialThis deep wide-field view captures the interstellar landscape south of Orion, highlighting the interplay between dark dust and luminous nebulae across Monoceros and Lepus. These observations reveal the life cycles of massive star systems. #Astronomy #Astrophysics #NASA #Orion #DeepSky
Les goodies des pré-commandes du #j2s #nebulaeoriginsofstars durant la campagne de financement participatif #ulule sont arrivés !
#scicomm #astrophysics #boardgames
ALT : L'autrice du jeu montre les goodies.
@sophiejaggers.bsky.socialAnother useful method for determining the parameters of a roAp star is using an iodine cell while observing its RV — radial velocity.
This method uses the star's spectral lines in a certain wavelength range to measure Doppler shifts very precisely.
#Astrophysics #Stars
@science.socialThe Orionid meteor shower occurs as Earth crosses Halley’s Comet’s orbital path each October. Moving at 66 km/s, these meteors create stunning streaks radiating from Orion. This long exposure from Inner Mongolia captures the cosmic event in detail. #space #astronomy #astrophysics
@science.socialHubble captures HH 30 in the Taurus cloud, a young star hidden by an edge-on protoplanetary disk. Bipolar jets blast from the center as planets begin to form from dust and gas. This offers a rare look at how solar systems like ours are born. #space #astronomy #astrophysics
@science.socialOmega Centauri is the Milky Way’s largest globular cluster, home to 10 million stars. At 17,000 light-years away, its diverse stellar ages suggest it’s the remnant core of a captured dwarf galaxy. #Astronomy #Astrophysics #NASA #SpaceExploration
@science.socialThe Medusa Nebula (Abell 21) is a vast planetary nebula 1,500 light-years away in Gemini. This stellar remnant shows a white dwarf shedding its outer layers, creating serpent-like gas filaments across 4 light-years. #space #astronomy #astrophysics
@science.socialAirglow and auroras are distinct photochemical events. While solar wind triggers auroras, airglow stems from chemiluminescence as atoms release energy. This overlap reveals the ionosphere’s complex dynamics. #Astrophysics #NASA #AtmosphericScience #Airglow #Astronomy
@logidias.bsky.socialSimulate cosmic variables yourself! Watch our deep-dives on @logidiasvideo & test the Drake Equation in our interactive 3D simulator: https://www.logidias.com/en/proyectos/astroacademia.html
👉 Test on AstroAcademia 3D
#Astrophysics #LOGIDIAS
@logidias.bsky.social🔭 The universe is 13.8 billion years old, teeming with trillions of habitable worlds. Yet, we hear only dead silence. The Fermi Paradox isn't just a puzzle; it's a terrifying cosmic mystery. Where is everyone?
#Science #Physics #SciSky #Astrophysics
@science.socialThe rare green flash occurs at sunset when refraction acts as a prism, bending light into its spectral colors. Multiple flashes happen when temperature inversions stack miraged images of the sun. #Astronomy #AtmosphericPhysics #GreenFlash #ScienceEducation #Astrophysics
@stellarvisions.bsky.socialDécouvrez la beauté de l'univers avec cette image fascinante des nébuleuses. 🌌✨
@welshcountry.bsky.social