The Astronomy Thread

BrutulTM

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Why not just put the tool on the robot that analyzes dirt on the spot so they don't have to fly it back 140M miles?

Don't the Mars rovers already have that?

Better call up NASA and tell them you have an amazing idea. I'm sure they will be so grateful.
 
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Kajiimagi

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NGC 6946 also called the fireworks galaxy , is a medium sized, face on spiral galaxy about 22 million light years away from earth.

Processed Using Siril, Starnet ++, & GraXpert, all 100% free.
Imaged with ZWO Seestar S50


NGC 6946_GraXpert.jpg
 
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Ukerric

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Okay, I waited a few days before posting this. We have a 4th flyby coming through, announced a few days ago. About 500 to 1 odds according to that Loeb psyop guy.

View attachment 602737

"Perihelion... 0.9 AU-just inside Venus's orbit"

Considering Venus is orbiting at 0.72 AU, this shows how serous the article is.

(also, the numbering doesn't quite make sense - the Zwiki catalog is typically date-three letter)
 
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Lambourne

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Okay, I waited a few days before posting this. We have a 4th flyby coming through, announced a few days ago. About 500 to 1 odds according to that Loeb psyop guy.

View attachment 602737


Can't find anything else on this, also the perihelion is on the same date as the other object that's been in the news over the last few months. Looks like AI-generated clickbait BS.

 
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Aldarion

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A cool writeup on a plan to send laser-powered probes to Alpha Centauri using realistic technology
Now, though, a cadre of researchers are working to make interstellar travel a reality, at least to our nearest neighbors. They are coalescing around an approach that could lead to closeup images of a star and an exoplanet just 25 years after mission launch.
More details on the tech
 
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Lambourne

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Next Starship test on Oct 13. The one after that will be the first of the redesigned V3 version.

 
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Burns

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The comet found last month is currently brighter than predicted. Naked eye visibility maxes out at 6.5 magnitude (according to the internetz) and it's at 6.7 right now (lower the number, brighter the object). So there is a possibility of seeing it with a good pair of binoculars and certainly with an actual telescope.
2025-10-11 21.00.24 theskylive.com a49257b8ede5.png

2025-10-11 21.00.42 theskylive.com b42d04b98973.png

2025-10-11 21.20.17 theskylive.com a72b69af091f.png





The most recent interstellar object visitor recently flew past Mars and will soon hit it's closest point to the sun (perihelion). NASA's Mars satellite (Mars Reconnaissance Orbiter) supposedly took some good pictures of it, but they wont upload them to the internet due to the government shut down. ESA already released the pictures it's Mars sat took and Hubble also already grabbed a picture. More pictures are planed, including the JWST:
2025-10-11 21.10.41 theskylive.com b9fb509360e9.png

 
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Kajiimagi

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The comet found last month is currently brighter than predicted. Naked eye visibility maxes out at 6.5 magnitude (according to the internetz) and it's at 6.7 right now (lower the number, brighter the object). So there is a possibility of seeing it with a good pair of binoculars and certainly with an actual telescope.
View attachment 605340
View attachment 605341
View attachment 605343




The most recent interstellar object visitor recently flew past Mars and will soon hit it's closest point to the sun (perihelion). NASA's Mars satellite (Mars Reconnaissance Orbiter) supposedly took some good pictures of it, but they wont upload them to the internet due to the government shut down. ESA already released the pictures it's Mars sat took and Hubble also already grabbed a picture. More pictures are planed, including the JWST:
View attachment 605342
*should* be a decent night for the telescope (assuming by back allows me) I'm planning to set it up and see if I can find the comet. Doubt the lil Seestar can track it but I can at least get some shots with my cell phone.
 
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Kajiimagi

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M76 a.k.a. Cork Nebula, Barbell Nebula or Little Dumbell Nebula. This is the remnant of a dying star approx 3,400 light years away from earth.

Processed with Siril , Starnet ++, and GraXpert (all free software) using 588 ten second exposures taken with a ZWO SeeStar S50.

FYI to anyone using a SeeStar, there appears to be a problem with the Seestar app (android at least) where the background is all jacked up. I've included a pic of what it looked like on my phone with a very red background. Thankfully the individual images themselves were not like that so I could stack them normally.

M76 Final_GraXpert.jpg
M76 all jacked up.jpg
 
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Kajiimagi

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I heard some tv news blather about 2 comets being visible next week? Are you telescopers going to scope them?
Gonna try my hardest! Next 3 days should be good weather for me to set up my Seestar AND I saw last night it's on the list of items to track so I don't have to eyeball it.
 
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Burns

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I heard some tv news blather about 2 comets being visible next week? Are you telescopers going to scope them?
Checking on the observed magnitude has been kinda interesting, even though I don't have the ability to really peer though the light pollution. Comet C/2025 R2 (SWAN) has been consistently brighter than predicted, flirting with being visible to the naked eye (under 6.5 magnitude), depending on the light pollution. Think I saw it hit 5.9 observed yesterday or the day before, which supposedly means all you need are binoculars to get a decent look at it.

As of a few min ago:
2025-10-17 19.09.12 theskylive.com 234eb739be44.png


The other comet, that's from outside our solar system, is sitting at ~12+ magnitude, so pretty dim to us. I would assume it may need a professional or high dollar private observatory.
 
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