Brown Dwarfs Aren't Stars, So No Brown Dwarves

I was on a flight recently and as we were descending (possibly around 10,000ft), I saw something burn up in the sky, almost seemingly level with the plane/wings but a few miles away.

I found it really interesting so have a few questions.

1. what is likely to have burned up?
2. would it likely have been at around 10,000ft too, or was it more likely to have been higher and I just had an unusual perspective?
3. have debris/meteors ever caused issues with commercial airliners?

Thanks

I was following some threads today about the stars in the constellation Andromeda and stumbled across Sterrennacht, or HAT-P-6. It's the star for HAT-P-6b which was found during exoplanet surveys.

HAT-P-6 is fairly dim at +10.54 apparent magnitude, but astronomers in the 1920s were cataloging dimmer stars -- HH Andromedae/Ross 248, is +12-something. And several of the HAP-T stars don't seem to be in other catalogs.

So question 1 is, "how did so many stars NOT get cataloged until an exoplanet survey?" Or were they in a database, just not the HD or HIP listings (on Wikipedia) that a rank amateur like me wouldn't easily know about?

Question 2, a little more vague, what other star surveys since Hipparcos and Tycho are important to know about?

I'm struggling with trying to give a possible reason

Tired of all the "what is this" posts. So, I have a magic pole, and a magic telescope. The pole is light years long. The telescope can see clearly all the way down the pole no matter how far away it is, c regardless. If I extend the pole long enough, will it eventually follow the "curve" of the universe, so the pole appears curved from my perspective? And if so, how long would it have to be?

We appear to be at the dawn of an era of transformationally cheap launch capability. Casey Handmer is a former NASA engineer who likes to blog about this and his most recent post sketches out the feasability of a 1km space telescope: https://caseyhandmer.wordpress.com/2024/11/30/it-is-time-to-build-the-monster-scope/It's an interesting article, however what I'm curious to know is:

1. Would astronomers be more interested in a single super-advanced instrument, or many, many adequate instruments?

2. Follow-on question: What need would there be for ground-based telescopes if we could launch dozens of 10m space telescopes for the cost of a single ground based telescope of similar capability?

So it's a bit late but I just remembered and I have to know: was "asteroid 2019 ok" visible to naked eyes in Egypt? Because I recall seeing something in late July 2019 when I was out at night, and I have been doubting myself since then.

Edit: I saw a greenish white light ball the size of a melon, going from North-west to South-east, could see it for about two seconds.

My location was in Al-Mahalla city, in the middle of Nile delta in Egypt, late July 2019

I am currently working on a research paper regarding Supernovae and am looking for materials to read on them to gain deeper understanding of how they are formed (from a physics standpoint). Do you have any recommendations for books, papers, publications? I am really struggling to find something interesting. :)

Not sure how or where to research this so I figured I'd toss the question in here.

So I'm watching 2001: A Space Odyssey and at the part where Dave shoots himself into the ship airlock and I'm musing about physics in a vacuum.

One question that popped up tangentially is momentum. We talk about objects moving and at rest in physics but is there ever a situation where something in space is ever at 0 acceleration? Like, relatively speaking, something could match the momentum of a larger object e.g. a rock sitting on Earth and that would be considered at rest, but the Earth is moving. So in a bigger picture the rock is also moving. But say you took a spaceship into the vacuum with nothing nearby, could you balance out the momentum of the ship to 'stop' completely, or is momentum relative to other objects? If so, how is that measured is there a baseline to reference? Is there a gravitational component to it?

Hi all! Wanna start off by saying I know next to nothing about astronomy, including good terminology so I'm sorry if this is poorly worded and a dumb question.

My partner and I were driving on the expressway tonight and saw quite a large shooting star above us which went over the treeline before dissipating behind the treeline. It had a bit of a comet tail but apart from being somewhat large did not seem unusual. What us off was after it dissipated there was a hazy red-orange plume in that area that went from where the comet/asteroid first appeared that then went down in front of the tree line.

This is probably a very stupid question with a very obvious answer, but what was the plume and why did it's path appear somewhat different than the original shooting star?

I've spent the last hour trying to find more information but the only things that seemed to make sense with its appearance and timing were 1. a dust trail and 2. information on the likely makeup of the comet/asteroid. Any additional info would be greatly appreciated :)

Hi, I’m gonna be roadtripping this winter. I’ll be at big bend national park either January 4th or January 5th. I’m looking to stargaze.

If I make it there by the 4th, the 23% ilium moon sets at 10:55pm. I’d assume this means by midnight the stars would look beautiful right? If I make it there the 5th, the 33% ilum moon sets at 11:59pm. So how long would it take for the starts to look nice then?

Getting there by the 4th would be a bit rushed but I really really wanna have my first cool star gazing experience.

I’m also young and don’t mind staying up all night if that would work for the 5th.

Any advice? Thanks!

So I notice that, today, the constellation Centaurus just peeks above the southern horizon at night and draws a slow circle across the sky. It wasn't like that anciently due to precession, as the earth's poles were pointed in different directions. So, I am curious which constellation in ancient times was closest to the Southern horizon?

Thanks!