Onions belt is pretty linear, at least based on our point of view from Earth. Using the distances and positions of those 3 stars, as well as our position as earth, could we determine the coefficient of determination (R squared) of this constellation?

I'm no astronomer by any means, rather a chemist by training. Taught to see trends and straight lines as much as possible

The grids on the astrolabe have arcs that are not circles, how where they determined and how they where constructed? did they make a globe out of thin wires and projected the shadow on a plate?

today we can easily get some equations and write some code to get the exact grids. but I'm interested in the original process

This Thursday, the Full Moon is going to be the biggest of this year I think - named the Hunter moon. Can someone give me pointers on good elevated peaks/directions to photograph or view the Moon from? It turns full at around 4am on Thursday morning.

Hello! This may be an already answered question, but I have tried googling things in line with what I am describing here but did not find a conclusive answer which matched my observation.

Unfortunately I was unable to take a picture because I was just staring at the sky in awe when I saw this and just continued staring, thinking I'd be able to google it later.

On 15 Oct 2024 at around 0540 I saw a large glowing orange streaks make their way across the sky slowly before fading 5° above the horizon. To me it was visible only towards the North, with the top of the arc being no more than 20° above the horizon. Top of the arc was also straight North from me. I have this bearing estimated since I align my truck E-W everytime I camp usually to catch the sunrise. Object(s) took ~20s from when I spotted it near the horizon to where it faded it out of view. It was constantly and slowly breaking up into smaller pieces which would fade out sooner.

Becuase of its speed, I thought maybe a SpaceX or other rocket launch... But then the erratic breaking up made no sense to me, and I also found nothing in the news to match. Also correct me if I'm wrong, given the commonly used launch sites on earth, why would I see this that far North of me when I was situated in Idaho at the time.

My only other guess was some kind of very large meteor breaking up upon entry? However my previous experience viewing such objects, the speed has been fast, even if there is a break up to witness it usually all happens in a few seconds.

So I guess my question is, what did I see? And did I miss any obvious news or obvious search that would've answered my question?

Like, I made some attempts ~10-40 minutes after sunset on the 12th and 14th, but only managed to find Venus, and various clouds/aircraft/contrails. This was at bit less than 39 degrees north. Maybe the transparency just wasn't there?

Hey guys tonight me, my daughter (10y.o) and my wife went outside to gields to try and see the comet. We was there from 19:45 till 20:30 because we read that should be visible just before 20h.

Skies were very clear we could see some stars and moon, we watched at the west just above horizont but we did not see it.

We are watching from Vrischelo the Netherlands, and I am trying to figure out what went wrong.

I am watching theskylive and trying to figure out what time it will be visible for next couple of days but it look it wont?

Or it will be too low on horizont?

I hear that the tail is decreasing and I am wondering if it'll still be visible on this Friday, 18th. Thanks!

Looking at the weather forecast for my area, there will be some clouds the next 2 nights, but it will be clear after that. So I could try to find a dark spot to see the comet Thursday night, but that's the night of the full moon. Would it be better to wait until later in the month when the moon is waning? But the comet is supposed to be dimmer later this month.

Gonna try my luck tomorrow at seeing the comet. Has been to much clouds and rain here in australia :( does anyone reckon I'll see it in newcastle tomorrow?

It was a simpler time. I lived in Los Angeles in the 60's.

I was in Boy Scouts and our troop was on a camping trip in the desert in Anza Borrego I think, or somewhere in the desert. I was sleeping outside on the ground, and I woke up in the middle of the night and saw what looked like a spotlight pointed up at the sky in the desert. I watched it for what seems like hours, and it slowly grew and grew. Eventually I could see the head of a comet.

Looking back now, I think it was probably Comet Ikeya–Seki in 1965, although it might have been Comet Ikeya in 1964. I can't remember if I was 8 or 9 years old.

Can anyone help me figure this out?

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Okay A bit of context I am a Warhammer 40K 30k fantasy fan and I've heard somewhere a long ass time ago that the Moon is slowly drifting away from her and I'm just wondering how much farther with the moon be it like 38,000 years from now or 39 because currently 40K is in the 42nd millenia

Edit thank you all for commenting I am a bit of a nerd but I wouldn't have been able to do like the calculations so again thank you all