#Tag · BT Free Social

Chip Unicorn and 1 other boosted

Starry Time Podcast

@starrytimepod@universeodon.com · 3 hours ago

Don't worry -- #JWST heard you -- here's aurora on #Uranus (heh)

📷 :https://flic.kr/p/2rXrWvK

#Aurora #SolarSystem #Space #Science #Astrophotography #astrodon #astronomy #Webb #NASA #ESA

Image description from source in toot: Collage of time-stamped images of Uranus's upper atmosphere, showing auroras. Four images are in a square on the left and one large image is on the right. In each of the four images on the left, the time is located in the bottom left corner of each: top left: 09:10 UTC, top right: 12:45 UTC, bottom left: 16:30 UTC, bottom right: 20:15 UTC." In the large image on the right, the words "Uranus 19-20 Jan 2025" are in the upper left corner, "0:37 UTC" and "Webb/NIRSpec" in the bottom left, and a key of altitude ranging from 500km to 5000km, blue to red, is in the bottom right.

Each image shows the planet Uranus set against the blackness of space. The planet appears as a smooth, bright cyan disc at the center, its atmosphere reveals soft, hazy tones of blue. Surrounding the planet is a vivid reddish glow, forming a diffuse halo that contrasts strongly with the cool blue of the planetary disc. Encircling Uranus are several thin, concentric rings, visible as pale gray arcs. Subtle variations in brightness can be seen across the planet’s face, with slightly brighter patches near the limb, hinting at atmospheric structure. — Image description from source in toot: Collage of time-stamped images of Uranus's upper atmosphere, showing auroras. Four images are in a square on the left and one large image is on the right. In each of the four images on the left, the time is located in the bottom left corner of each: top left: 09:10 UTC, top right: 12:45 UTC, bottom left: 16:30 UTC, bottom right: 20:15 UTC." In the large image on the right, the words "Uranus 19-20 Jan 2025" are in the upper left corner, "0:37 UTC" and "Webb/NIRSpec" in the bottom left, and a key of altitude ranging from 500km to 5000km, blue to red, is in the bottom right. Each image shows the planet Uranus set against the blackness of space. The planet appears as a smooth, bright cyan disc at the center, its atmosphere reveals soft, hazy tones of blue. Surrounding the planet is a vivid reddish glow, forming a diffuse halo that contrasts strongly with the cool blue of the planetary disc. Encircling Uranus are several thin, concentric rings, visible as pale gray arcs. Subtle variations in brightness can be seen across the planet’s face, with slightly brighter patches near the limb, hinting at atmospheric structure.

Flickr

Webb maps the mysterious upper atmosphere of Uranus

Hey, hey, it’s everyone’s favorite 7th planet from the Sun! Webb has provided us with the first vertical view of Uranus’s ionosphere, revealing auroras shaped by its tilted magnetic field. Getting a look at the structure of the region where the atmosphere interacts strongly with the planet’s magnetic field is giving us the most detailed portrait yet of where its auroras form, how the magnetic field influences them, and also data on how Uranus’s atmosphere has continued to cool since the 1990s. Uranus has the strangest magnetosphere in the Solar System. It is tilted and offset from the planet’s rotation axis (and this planet already rolls around the Sun nearly on its side), which means auroras move across the surface in complex ways. Better understanding Uranus will give us insight into ice-giant planets and help us better characterize giant planets outside our Solar System. This image collage shows 5 time-stamped images mapping the vertical structure of Uranus's atmosphere, uncovering how temperature and charged particles vary with height across the planet. Using Webb’s NIRSpec instrument, the team detected the faint glow from molecules high above the clouds. These unique data provide the most detailed portrait yet of where the planet’s auroras form, how they are influenced by its unusually tilted magnetic field, and how Uranus’s atmosphere has continued to cool over the past three decades. The results offer a new window into how ice-giant planets distribute energy in their upper layers. Two bright auroral bands were detected near Uranus’s magnetic poles, together with reduced emission and ion density in part of the region between the two bands (a feature likely linked to transitions in magnetic field lines). Image Credit: ESA/Webb, NASA, CSA, STScI, P. Tiranti, H. Melin, M. Zamani (ESA/Webb) Read more: esawebb.org/news/weic2602/ Image description: Collage of time-stamped images of Uranus's upper atmosphere, showing auroras. Four images are in a square on the left and one large image is on the right. In each of the four images on the left, the time is located in the bottom left corner of each: top left: 09:10 UTC, top right: 12:45 UTC, bottom left: 16:30 UTC, bottom right: 20:15 UTC." In the large image on the right, the words "Uranus 19-20 Jan 2025" are in the upper left corner, "0:37 UTC" and "Webb/NIRSpec" in the bottom left, and a key of altitude ranging from 500km to 5000km, blue to red, is in the bottom right. Each image shows the planet Uranus set against the blackness of space. The planet appears as a smooth, bright cyan disc at the center, its atmosphere reveals soft, hazy tones of blue. Surrounding the planet is a vivid reddish glow, forming a diffuse halo that contrasts strongly with the cool blue of the planetary disc. Encircling Uranus are several thin, concentric rings, visible as pale gray arcs. Subtle variations in brightness can be seen across the planet’s face, with slightly brighter patches near the limb, hinting at atmospheric structure.

Starry Time Podcast

@starrytimepod@universeodon.com · 3 hours ago

Don't worry -- #JWST heard you -- here's aurora on #Uranus (heh)

📷 :https://flic.kr/p/2rXrWvK

#Aurora #SolarSystem #Space #Science #Astrophotography #astrodon #astronomy #Webb #NASA #ESA

Flickr

Webb maps the mysterious upper atmosphere of Uranus

your auntifa liza 🇵🇷 🦛 🦦 and 5 others boosted

Juan Carlos Muñoz

@astro_jcm@mastodon.online · 12 hours ago

🚨 #JOB ALERT 🚨

Are you passionate about #astronomy communication? At @esoastronomy we're looking for a Visits & Outreach Coordinator for our Paranal Observatory in #Chile, home to the Very Large Telescope and soon the Extremely Large Telescope.

You must be fluent in English and Spanish, and have experience guiding visitors in a scientific institution, museum, observatory...

Apply here: https://recruitment.eso.org/jobs/2026_0016#

📷 ESO/G. Hüdepohl

#fedihire #getfedihired #astrodon #astronomy #science #scicomm

A drone shot of four huge telescope tomes on top of a mountain in the middle of the desert. The four domes are identical, all of them cylindrical and metallic, and their sliding doors are open. One of the telescopes is firing four bright laser beams towards the drone. The top of the hill is flat and also hosts other smaller domes and buildings.

Juan Carlos Muñoz

@astro_jcm@mastodon.online · 12 hours ago

🚨 #JOB ALERT 🚨

You must be fluent in English and Spanish, and have experience guiding visitors in a scientific institution, museum, observatory...

Apply here: https://recruitment.eso.org/jobs/2026_0016#

📷 ESO/G. Hüdepohl

#fedihire #getfedihired #astrodon #astronomy #science #scicomm

schuh boosted

Dr. Victoria Grinberg

@vicgrinberg@mastodon.social · last week

Wenn ihr Lust habt mich live über Schwarze Löcher sprechen zu hören - am Freitag den 8. Mai bin ich im Planetarium Stuttgart.

Es wird auch eine Signierstunde geben (mein Buch gibt es auch im Planetariumsshop, aber ihr könnte gerne euer Exemplar mitbringen) 😊

Infos gibt es hier im PDF https://www.planetarium-stuttgart.de/startseite/spielplan.html, Tickets gibt es wohl erst ein bisschen später.

#astrodon #astronomie #WissKomm #Stuttgart

Planetarium Stuttgart: Spielplan

your auntifa liza 🇵🇷 🦛 🦦 boosted

ESO

@esoastronomy@mastodon.social · 4 days ago

We often hear news about habitable #exoplanets, but what does "habitable" actually mean? Is an "Earth-like" planet truly like the Earth?

In our latest ESO blog we clarify some of the confusion around these terms. Check it out!

https://www.eso.org/public/blog/habitable-zone/

#astrodon #astronomy #astrophysics #space #science

A diagram of the inner part of the Solar System, showing Mercury, Venus, Earth and Mars orbiting the Sun. A green band illustrates the area around the Sun where liquid water can exist.

www.eso.org

ESOblog: Hope or despair: is any exoplanet really habitable?

Hope or despair: is any exoplanet really habitable?

Dr. Victoria Grinberg boosted

Dr. Victoria Grinberg

@vicgrinberg@mastodon.social · 4 days ago

I do miss the old twitter when enough people in my corner of high energy astro were on, to have meaningful conference convos - either with folks attending or with colleagues who were not there this rime but were interested and would get the people involved and the context 😢

#astrodon

Dr. Victoria Grinberg boosted

AstroHyde

@AstroHyde@mastodon.social · 3 days ago

One of my favorite things about #astronomy is how well it goes with #art and spacing out generally. Since I can't go into the telescopes atm, had a bit of fun. Def recommend #watercolour paints for #planets .

Obviously these ones are destined for a fabulous collision due to their proximity but it makes for some fun #scifi thoughts. Please imagine at least 1 is traveling escape velocity and will get away.

#Astrodon #sciart #science #saturday #AstroArt #fediart #astro

oops almost forgot caption, this is my mini watercolor featuring 6 planets in a starry nebula, main colors blues, purple, green and white

AstroHyde

@AstroHyde@mastodon.social · 3 days ago

Obviously these ones are destined for a fabulous collision due to their proximity but it makes for some fun #scifi thoughts. Please imagine at least 1 is traveling escape velocity and will get away.

#Astrodon #sciart #science #saturday #AstroArt #fediart #astro

ESO

@esoastronomy@mastodon.social · 4 days ago

We often hear news about habitable #exoplanets, but what does "habitable" actually mean? Is an "Earth-like" planet truly like the Earth?

In our latest ESO blog we clarify some of the confusion around these terms. Check it out!

https://www.eso.org/public/blog/habitable-zone/

#astrodon #astronomy #astrophysics #space #science

www.eso.org

ESOblog: Hope or despair: is any exoplanet really habitable?

Hope or despair: is any exoplanet really habitable?

Dr. Victoria Grinberg

@vicgrinberg@mastodon.social · 4 days ago

#astrodon

Kevin Russell boosted

Samuel

@sml@chaos.social · 4 days ago

Even asteroids need friends, so I hooked up the asteroid generator to a point cloud, tweaked a few things, and voila: asteroid fields!

The "merge" parameter doesn't really merge anything; it simply removes the randomization of the noise function per asteroid, so that nearby asteroids get similar noise values. I'm surprised how quick this still is. Granted, you need to lower the resolution, but its barely noticable from afar.

#Blender #B3D #Geometry Nodes #Astrodon #Asteroid