sueden.social ist einer von vielen unabhängigen Mastodon-Servern, mit dem du dich im Fediverse beteiligen kannst.
Eine Community für alle, die sich dem Süden hingezogen fühlen. Wir können alles außer Hochdeutsch.

Serverstatistik:

1,9 Tsd.
aktive Profile

#Space

397 Beiträge228 Beteiligte21 Beiträge heute
Antwortete im Thread

Swirling Magnetic Field around Our Galaxy's Central Black Hole
* Image Credit: EHT Collaboration
eventhorizontelescope.org/orga

Explanation:
What's happening to the big black hole in the center of our galaxy? It is sucking in matter from a swirling disk -- a disk that is magnetized, it has now been confirmed. Specifically, the black hole's accretion disk has recently been seen to emit polarized light, radiation frequently associated with a magnetized source. Pictured here is a close-up of Sgr A*, our Galaxy's central black hole, taken by radio telescopes around the world participating in the Event Horizon Telescope (EHT) Collaboration. Superposed are illustrative curved lines indicating polarized light likely emitted from swirling magnetized gas that will soon fall into the 4+ million solar mass central black hole. The central part of this image is likely dark because little light-emitting gas is visible between us and the dark event horizon of the black hole. Continued EHT monitoring of this and M87's central black hole may yield new clues about the gravity of black holes and how infalling matter creates disks and jets
pwg.gsfc.nasa.gov/Education/Im
apod.nasa.gov/apod/ap140323.ht
youtube.com/watch?v=60qnTvDbOZ
eventhorizontelescope.org/scie
eventhorizontelescope.org/blog

apod.nasa.gov/apod/ap240401.ht

#space#galaxy#milkyway
Antwortete im Thread

The Milky Way's Black Hole
* Image Credit: X-ray - NASA/CXC/SAO, IR - NASA/HST/STScI; Inset: Radio - Event Horizon Telescope Collaboration
eventhorizontelescope.org/
stsci.edu/
chandra.harvard.edu/

Explanation:
There's a black hole at the center of the Milky Way. Stars are observed to orbit a very massive and compact object there known as Sgr A* (say "sadge-ay-star"). But this just released radio image (inset) from planet Earth's Event Horizon Telescope is the first direct evidence of the Milky Way's central black hole. As predicted by Einstein's Theory of General Relativity, the four million solar mass black hole's strong gravity is bending light and creating a shadow-like dark central region surrounded by a bright ring-like structure. Supporting observations made by space-based telescopes and ground-based observatories provide a wider view of the galactic center's dynamic environment and an important context for the Event Horizon Telescope's black hole image. The main panel image shows the X-ray data from Chandra and infrared data from Hubble. While the main panel is about 7 light-years across, the Event Horizon Telescope inset image itself spans a mere 10 light-minutes at the center of our galaxy, some 27,000 light-years away.
nasa.gov/image-article/sagitta
apod.nasa.gov/apod/ap070114.ht
www6.slac.stanford.edu/researc
eventhorizontelescope.org/blog

#space#galaxy#milkyway
Fortgeführter Thread

Journey to the Center of the Galaxy
* Video Credit: ESO/MPE/Nick Risinger (skysurvey.org)/VISTA/J. Emerson/Digitized Sky Survey 2
skysurvey.org/
archive.eso.org/dss/dss
eso.org/public/teles-instr/par
eso.org/public/

Explanation:
What lies at the center of our galaxy? In Jules Verne's science fiction classic, A Journey to the Center of the Earth, Professor Liedenbrock and his fellow explorers encounter many strange and exciting wonders. Astronomers already know of some of the bizarre objects that exist at our Galactic Center, including vast cosmic dust clouds, bright star clusters, swirling rings of gas, and even a supermassive black hole. Much of the Galactic Center is shielded from our view in visible light by the intervening dust and gas, but it can be explored using other forms of electromagnetic radiation. The featured video is actually a digital zoom into the Milky Way's center which starts by utilizing visible light images from the Digitized Sky Survey. As the movie proceeds, the light shown shifts to dust-penetrating infrared and highlights gas clouds that were recently discovered in 2013 to be falling toward the central black hole.
apod.nasa.gov/apod/ap100831.ht
en.wikipedia.org/wiki/Galactic
apod.nasa.gov/apod/ap011229.ht
en.wikipedia.org/wiki/Sagittar*

apod.nasa.gov/apod/ap241124.ht

#space#galaxy#milkyway

⏮️ JUST LAUNCHED: Launch in Flight

🛰️ Mission: Starlink Group 6-83 [Communications]
🕒 Launched on: Tue, 13 May 2025 5:02:20 UTC 
☄️ Status: The launch vehicle has lifted off from the launchpad.
🚀 Launcher: Falcon 9 Block 5
🏗️ Launch Provider: SpaceX → [59 launches this year]
🌍 Launch Site: Launch Complex 39A at Kennedy Space Center, FL, USA 🇺🇸

📡 Mission Description:
A batch of 28 satellites for the Starlink mega-constellation - SpaceX's project for space-based Internet communication system.

↗️ NEXT LAUNCH:

🛰️ Mission: Unknown Payload
🚀 Launcher: Long March 2D
🕒 Scheduled for: Wed, 14 May 2025 4:10:00 UTC 
Current T-0 confirmed by official or reliable sources.
🏗️ Launch Provider: China Aerospace Science and Technology Corporation → [22 launches this year]
🌍 Launch Site: Launch Area 4 (SLS-2 / 603) at Jiuquan Satellite Launch Center, People's Republic of China 🇨🇳

📡 Mission Description:
Details TBD.

Gaia Reconstructs a Top View of our Galaxy
* Illustration Credit: ESA, Gaia, DPAC, Stefan Payne-Wardenaar

Explanation:
What does our Milky Way Galaxy look like from the top? Because we are on the inside, humanity can’t get an actual picture. Recently, however, just such a map has been made using location data for over a billion stars from ESA’s Gaia mission. The resulting featured illustration shows that just like many other spiral galaxies, our Milky Way has distinct spiral arms. Our Sun and most of the bright stars we see at night are in just one arm: Orion. Gaia data bolsters previous indications that our Milky Way has more than two spiral arms. Our Galaxy's center sports a prominent bar. The colors of our Galaxy's thin disk derive mostly from dark dust, bright blue stars, and red emission nebula. Although data analysis is ongoing, Gaia was deactivated in March after a succession mission.
science.nasa.gov/resource/the-
en.wikipedia.org/wiki/Orion_Ar
en.wikipedia.org/wiki/Milky_Wa
apod.nasa.gov/apod/ap050825.ht

apod.nasa.gov/apod/ap250513.ht

#space#galaxy#milkyway

The recently launched initial #satellites in the AST SpaceMobile BlueBird constellation are bright, but less so than the prototype BlueWalker 3 spacecraft launched in 2022. "Based on a large set of visual observations, the mean apparent magnitude of BlueBird satellites is 3.44, while the mean of magnitudes adjusted to a uniform distance of 1000 km is 3.84. Near zenith the spacecraft can be as bright as magnitude 0.5. ... A model for their brightness shows that design changes since the BlueWalker 3 mission can explain the behavior of BlueBird."

arxiv.org/abs/2505.05820

Evidence that some of the Chinese #Qianfan satellites are tumbling and presumably no longer under control. "All six of the tumbling #spacecraft are from Launch 2. As noted in Section 2, those satellites were made by a different manufacturer than the spacecraft in Qianfan launches 1, 3 and 4. @planet4589 indicates that all the tumbling spacecraft have failed."

arxiv.org/abs/2505.07194

⏮️ JUST LAUNCHED: Launch in Flight

🛰️ Mission: Starlink Group 15-4 [Communications]
🕒 Launched on: Tue, 13 May 2025 1:15:10 UTC 
☄️ Status: The launch vehicle has lifted off from the launchpad.
🚀 Launcher: Falcon 9 Block 5
🏗️ Launch Provider: SpaceX → [58 launches this year]
🌍 Launch Site: Space Launch Complex 4E at Vandenberg SFB, CA, USA 🇺🇸

📺 Watch Live: 1

📡 Mission Description:
A batch of 26 satellites for the Starlink mega-constellation - SpaceX's project for space-based Internet communication system.

↗️ NEXT LAUNCH:

🛰️ Mission: Starlink Group 6-83
🚀 Launcher: Falcon 9 Block 5
🕒 Scheduled for: Tue, 13 May 2025 3:36:30 UTC 
Current T-0 confirmed by official or reliable sources.
🏗️ Launch Provider: SpaceX → [59 launches this year]
🌍 Launch Site: Launch Complex 39A at Kennedy Space Center, FL, USA 🇺🇸

📡 Mission Description:
A batch of 28 satellites for the Starlink mega-constellation - SpaceX's project for space-based Internet communication system.