Halloween Comet C/2024 S1 (ATLAS): One More Bright Comet for October 2024?
If I were superstitious…
https://starwalk.space/en/news/new-kreutz-sungrazer-comet-atlas-2024
#comets
Five Bright #Comets from #SOHO
#Astronomy #Picture of the Day
Six #Strange #Dark #Comets Found In Near #Earth #Orbit With ' #Oumuamua Like Properties:
Source: https://youtube.com/watch?v=IXfIRPj37Bg
0:00 'Oumuamua...again?
1:00 Most likely explanation
1:30 Discovery of 6 similar objects right here!
2:00 Dark comets
2:30 Asteroids vs comets
3:40 So what is a comet then?
5:05 Oumuamua deceleration is similar to objects here
6:48 Dark comet outgassing
7:10 5 more found!
7:55 Oumuamua-likes
9:10 2030s observation from Hayabusa-2
9:50 June 2024 approach
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Six Strange Dark Comets Found In Near Earth Orbit With ’Oumuamua Like Properties
Before the launch of the Solar and Heliospheric Observatory (SOHO) in 1995, astronomers had never seen anything like this. Behold, a #solar #storm passing directly in front of the #Pleiades:
SOHO recorded this rare conjunction on May 21st. An erupting filament of magnetism near the sun's north pole propelled the #CME into space just as the #SevenSisters were passing by. #Electra, #Taygete, #Maia, #Celaeno, #Alcyone, #Sterope, and #Merope spent nearly three hours shining through the translucent solar storm.
When SOHO left Earth almost 30 years ago, it carried the first realtime #coronagraph into #space. Coronagraphs are devices that create an #artificial #eclipse, blocking the glare of the #sun to reveal nearby #stars, #planets, and #comets. No telescope on Earth could see something as faint as the Pleiades only a few degrees from the sun, but SOHO does it all the time.
https://spaceweather.com/
Ein gruseliges Spinnennetz, magische Drachen oder schemenhafte Geisterspuren? Was siehst du auf diesem Bild des Supernova-Überrests Vela? Diese wunderschöne Farbenpracht zeigt die geisterhaften Überreste eines gigantischen Sterns und wurde hier in unglaublichen Details mit dem VLT Survey Telescope am Standort Paranal der Europäischen Südsternwarte (ESO) in Chile aufgenommen.#ESO #esoorg #Astronomy #Astrophysics #Astronomie #Suedsternwarte #telescopes #detectors #comets #planets #stars #galaxies #nebulae #universe #NTT #VLT #VLTI #ALMA #ELT #LaSilla #Paranal #Garching #Chile
ESO fotografiert den Geist eines Riesensterns
TWO #COMETS DIVE INTO THE #SUN: Over the weekend, the sun swallowed a comet. Correction: Make that two. Karl Battams of the US Naval Research Lab took a closer look at SOHO coronagraph images, and this is what he found:
"Saturday's bright comet turned out to have a smaller, leading companion," says Battams. "This isn't particularly uncommon. I'd estimate that at least 30% of the really bright sungrazers we see in SOHO coronagraph images end up having a small leading or trailing companion."
Both comets in Battams' movie are Kreutz sungrazers. These are fragments from the breakup of a single giant comet many centuries ago. Since SOHO was launched in 1995, the observatory has watched more than 4000 Kreutz fragments fall into the sun. None have survived.
Astronomers have long wondered if one day a whole cluster of Kreutz fragments might appear--a veritable squadron of comets dive-bombing the sun. Such a swarm could be concentrated around the location of the progenitor comet. However, no one knows if or when it would happen.
"We have absolutely no idea what the actual distribution of Kreutz comets looks like around their orbit," notes Battams. "Undoubtedly there are clusters, but it’s a several-century long path they're following and we've only been blessed with a ~25-yr window into that.
spaceweather.com
Two #Comets in #Southern #Skies
#Astronomy #Picture of the Day
#astronomy Two articles published in the journal "Nature" report different studies on the materials present in the atmospheres of #comets, which appear to contain #iron and #nickel even in the ones far from the Sun.