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#Astrodon

171 posts67 participants9 posts today
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Starry Time Podcast

This is Messier 82 -- a starburst galaxy located in the #constellation #UrsaMajor

We talked about this very starburst galaxy in our #astronomy episode on the Ursa Major constellation here: starrytimepodcast.podbean.com/

We also explored the #lore and #mythology of the two Ursa constellations here: starrytimepodcast.podbean.com/

📷 : esahubble.org/images/heic0604a

Image of Messier 82 -- a starburst galaxy. The galaxy has a bright central region and glowing red and blue clouds of gas extending outward, surrounded by scattered stars and a dark background.
#astrodon#astrophotography#hubble
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Thomas Connor

On the one hand, as an X-ray astronomer who does not work on bright objects, I'm happy to go along with dunking on the Crab as a nonsense unit.

Conversely, as an X-ray astronomer (and one employed by a flagship X-ray observatory) who has to talk to low-energy folks, I feel like I need to stand up for what is, in effect, just sparkling Solar Luminosities.

#Astrodon
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leece

So on the Anzac Day weekend I finally was able to take a print of my award winning photograph taken at Orchard Glory Farm Resort to present to the proprietor David, as a thank you for keeping the skies dark.

Thank you to @rdm for taking the photos for the presentation and once again to the #Astrofest for the photography competition and of course, #AustralasianDarkSkyAlliance for sponsoring the prize.

A woman wearing a vest and a long sleeved grey t-shirt with a Swancon Logo on a ringed planet is presenting a signed photograph of the Galactic Core rising over a resort and dam. It is captioned with the Astrofest Logo and has some photography notes. The signature reads "Thank you for keeping the Sky Dark " Alicia Smith
Corner of the photograph in the process of being signed.
#Astrodon#astrophotography#SouthernHemisphereAstronomy
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franco_vazza

Interesting revised take on the amplification of magnetic fields in the collapse of a self-gravitating halo, using new Pencil MHD numerical simulations by A. Brandenburg and E. Ntormousi on #astroph

arxiv.org/pdf/2505.02885

which analyses in detail the interplay between the decay of turbulence and the driving of vorticity, which in turn amplifies magnetic fields, in an indealised collapse case.

Very relevant for the first amplification of B in the universe!

#astronomy#astrodon#science
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Starry Time Podcast

This is Hen 2-104 aka the Southern Crab Nebula!

It's a planetary nebula with a symbiotic star system at its center 🤩

It's located in the #constellation #Centaurus

To learn more about the #astronomy of the constellation Centaurus -- check out: starrytimepodcast.podbean.com/

If you want to know who the Centaur is, check out out our #Mythology episode: starrytimepodcast.podbean.com/

Image of The Southern Crab Nebula captured by the Hubble Space Telescope. This planetary nebula is comprised of a symmetrical, butterfly-like structure with bright, glowing filaments of gas and dust expanding outward from a central white ring. The nebula appears to have four main lobes, glowing in shades of gold, blue, and orange, set against a black background. Distant stars are scattered throughout the image.
#Astrophotography#Space#Science
Continued thread
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Reymond Aguinaldo

Scientists have obtained the first image of a black hole in 2019, using Event Horizon Telescope observations of the center of the galaxy M87. The image shows a bright ring formed as light bends in the intense gravity around a black hole that is 6.5 billion times more massive than the Sun.

This is the first-ever image of a black hole, obtained in 2019 using the Event Horizon Telescope. Scientists observed the supermassive black hole at the center of the galaxy M87, which is 6.5 billion times more massive than the Sun. The image reveals a bright ring, formed as light bends in the black hole’s intense gravity. And just to note, there’s a similar supermassive black hole at the center of our own galaxy, the Milky Way. Credit: Event Horizon Telescope Collaboration.
#BlackHoles#Physics#Science
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Andrea Luck

There's something really special about seeing the atmosphere fade into the darkness of space in images from orbit (except if you're a flat-planeter)

This is Mars, Cloudy Elysium region by NASA Viking 1 in 1978!

Full size: flic.kr/p/2r2XN9E

Mission: NASA Viking Orbiter 1
Image Time: 1978-05-28T21:33:39Z
Filters Red, Green, Violet
Product IDs: 710a58, 710a56, 710a52

Credit: NASA/JPL/AndreaLuck CC BY

A view of Mars from orbit, captured by NASA's Viking 1 in 1978, showing the planet’s rusty reddish surface curving toward space at the right edge. In the center, a bright, whitish, oval shaped cloud covers the peak of Elysium Mons, a large volcano. To the left of it, dark, fractured cracks run across the surface. These are the Elysium Fossae near the top and Elysium Chasma below. At the bottom of the image, Albor Tholus appears as a subtle, circular volcanic rise. Near the top, Hecates Tholus is faintly visible as a smaller, rounded volcano. The background to the right is the blackness of space, creating a stark contrast with the soft Martian atmosphere fading into a bluish haze near the edge, which is one of the most stunning aspects of the image.
#Space#Astrodon#Astronomy
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