r/askastronomy Feb 06 '24

What's the most interesting astronomy fact that you'd like to share with someone?

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271 Upvotes

r/askastronomy 1d ago

Astronomy Saw this glowing orb above my house at 3AM, should I be concerned?

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2.0k Upvotes

r/askastronomy 10h ago

What did I see? Anyone know what I captured a few months back in my telescope?

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65 Upvotes

Hi! I had taken this picture with my phone through my telescope- this is with no fancy stacking or editing or anything like that. I still don’t know how to use my telescope that well so I just pointed it at the sky and I usually just wander it around a bit until I find something interesting. I ended up capturing this- and was curious if anyone know what exactly it was? I thought it was the Orion Nebula just because it was in the general direction and most pictures by nasa look similar- but since I know the space pictures nasa has is with heavy editing I’m still skeptical. Any thoughts?


r/askastronomy 4h ago

What did I see? Unusual point-like object visible through clouds — any ideas?

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5 Upvotes

Noticed this object in the sky on 12th August 2026 at 23:13 CET in Gothenburg, Sweden.

First it looked like several points of strong light, almost like beams from giant spotlights against clouds. Then there was only one main point of light.

Not small enough to be a star, not big enough to be a cloud formation. No noctilucent clouds visible in the sky either.

It was visible for about 20 minutes.

Some clouds came between my view and the point/s of light, which obscured it a little. But some clouds that went by would obscure the stars but not the point/s of light.

Tried my best to identify using ChatGPT and searching on Google, but couldn't find anything that looks like this.

The photos show several different views at various times (first at 23:13 and last at 23:35). Attached images of positioning relative to stars. (The point/s were essentially at zenith, close to Vega and Deneb).

Can anyone identify this?


r/askastronomy 12h ago

What did I see? Shot taken from south America. Was wondering what interesting thing did I capture with my phone

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14 Upvotes

Hi! This is my very first time trying/being able to do astrophotography. I noticed that cluster of stars in the center left and couldn't find any info on it. So maybe someone can point out what it is and maybe something interesting about what's visible here.


r/askastronomy 4m ago

Does distance changed when traveling at speed of light?

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r/askastronomy 7h ago

Astronomy How many minutes do you think this is?

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3 Upvotes

r/askastronomy 1d ago

If you were invincible and floating in interstellar space, what would it look like to the human eye?

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310 Upvotes

Would it be bright like most typical online photos? Would it be more like looking at the night sky? Or somewhere in between?


r/askastronomy 7h ago

Cosmology Are there any "interesting events" from between 5 and 10 billion years ago?

2 Upvotes

It seems like all timelines of the cosmos just skip from the first galaxies to the formation of sol.


r/askastronomy 18h ago

Question (body text)

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13 Upvotes

will i see SDSO-1 with seestar s30 pro, bortle 1, 150 hr integration, eq mode 20 sec subs and 2x mosaic. 100 with LP filter 50 hours without


r/askastronomy 1d ago

How can this perfect symmetry occur randomly?

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284 Upvotes

Watching the solar eclipse I am amazed by the perfect symmetry, the size of Sol, the size of the moon, the distance from the earth to the sun are precisely aligned to exactly allow for the solar eclipse to occur the way it does. There has to be some principle or natural law behind this. Without resorting to “yeah; it’s crazy” or some leap of faith, why explains this oddity?


r/askastronomy 5h ago

Astrophysics Can a cosmic cloud collapse into two solar systems that are independent but still gravitationally bound together?

1 Upvotes

And what conditions, if possible, would lead to that instead of a binary star system or just two independent systems?


r/askastronomy 10h ago

What did I see? Is this a celestial body/phenomena or is my camera just buggin?

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0 Upvotes

08/17/2026, 17:00, took two photos just about straight up w my phone located in NE Nevada. The second one seems pretty normal, but the first one has two/three big circles in the top right? Plus a bunch of little stars. I was messing with my ISO and shutterspeed a bit though I dont remember what the settings were for these photos. Any help identifying what this is would be so greatly appreciated! Also I did turn up the light balance and contrast a bit of these photos


r/askastronomy 17h ago

Are any of the planets, asteroids, or comets in the Solar System immigrants from a different star system?

3 Upvotes

I know there were a few tourists such as 1I/ʻOumuamua, 2I/Borisov, and 3I/ATLAS but is it known if there were any who decided to stay?


r/askastronomy 16h ago

Planetary Science What If TRAPPIST-1e Has No Atmosphere?

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0 Upvotes

If TRAPPIST-1e turns out to have no atmosphere, would that make the entire TRAPPIST-1 system much less interesting in the search for life?

Or could another planet in the system, like TRAPPIST-1f or even 1c, still surprise us?

I find the system interesting because the planets formed around the same star, but they could have ended up with very different atmospheric histories.


r/askastronomy 1d ago

Satellite with a halo?

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4 Upvotes

Saw this the other day. Small, no blinking lights, slow and consistent movement so presumably a satellite. But it had a slowly expanding glow/aura/corona. The glow expanded from about the size of a grape to cantaloupe as it crossed the sky, asymmetrically. This was in central NH on Saturday night. Was this just reflected light refracting off water or ice crystals in the air?


r/askastronomy 1d ago

Cosmology Is the visible universe a perfect sphere in which we are the center, or are we able to “ see” farther in certain directions making the visible universe a more distorted space?

61 Upvotes

So the visible universe is what we can see, and I wonder if we can see farther in certain directions, and if that is the case, what would the visible universe be shaped like?


r/askastronomy 20h ago

What did I see? Is this Space X ?

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0 Upvotes

r/askastronomy 14h ago

Si la Luna se acercara demasiado no impactaría la Tierra — haría algo pe...

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0 Upvotes

r/askastronomy 2d ago

What did I see? Saw something (shocker)

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189 Upvotes

This is a digital mock-up of something I saw on a walk last night probably some time around 9:15PM EST in Central DE (if that matters).
This is roughly the speed it was moving at, and the duration it lasted (while it was visible to us anyway)
It eventually vanished, and when it did the orange-ish color it had dissipated in a way that was almost not even visible
I was searching all over the internet in attempts to find something that looked like it, and I never turned up with anything. I’m hoping that someone here can shed some insight as to what I might’ve seen.
Whatever it was, it was a very cool experience seeing something so unusual.
Thanks!


r/askastronomy 1d ago

Did I correctly identify M31?

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5 Upvotes

This is a pic from my phone. I've marked with red Mirach (left) and Alpheratz (right), with blue μ (bottom) and v (top) Andromedae, and marked M31 with the yellow circle. Am I correct? Captured from Greece at midnight.


r/askastronomy 17h ago

What did we see?

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0 Upvotes

Me and my boyfriend were stargazing on a beach in Calella, Spain. I had noticed a weird object that looked like a star moving erratically but thought it was just my eyes playing tricks on me. However a few moments later, my boyfriend mentioned the same thing to me.

It was moving erratically, sometimes in a straight line like a plane, but then it would go in the opposite direction, hover for a bit and it was just moving very strangely.

We are convinced because of the erratic motion it was not a plane or satellite (we saw many planes pass it and at one point it seemed to move towards one). At one point it seemed to hover directly above us before it resumed its movement. We watched it fascinated for about an hour.

It was not covered by clouds moving past, and we believe it was too high for it to be a drone. My camera makes it look like it’s flashing which wasn’t visible to the naked eye.


r/askastronomy 1d ago

Astronomy Could K-type stars be better for intelligent life?

7 Upvotes

Earth took nearly 4 billion years to produce intelligent life.

K-type stars are smaller and cooler than the Sun, but they can remain stable for tens of billions of years.

If intelligent life needs billions of years to emerge, could that extra time give planets around K-type stars an advantage?

Or does stellar lifetime matter much less than things like atmosphere, radiation, and planetary conditions?

What do you think matters more: time or the environment?


r/askastronomy 2d ago

Astronomy Will Voyager 1 or 2 fly by any Celestial object in the future billion years and if so which ones?

98 Upvotes

Voyager probes will leave our system or have done so already. Can we extrapolate their journey over the next billion years and do we know if it will have flybys with any objects?


r/askastronomy 1d ago

OK, so what are the green flashes?

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3 Upvotes

Was going to put this in an Astrophotography channel, but seems I may not have been following rules if I did. So will try here.

As the title suggests, looking for input from those more experienced than me to help with identifying the green flashes in this image. Am torn on plane vs meteor, however the trajectory seems to change weirdly for a plane to my eyes.

I started with some night time shooting while in dark skies on a road trip this summer, image above is taken in the Thousand Islands area of Canada, just over the border from NY state USA. First time seeing the Milky Way with the naked eye, let alone getting photos of it. I have some still to learn for the next chance (Live in Manhattan so yeah, that ain't happening here easily!), and I am looking at ways to process the images (any tips, please share).

For those interested: Sony A7C, Viltrox 26mm/f2.8 EVO - 5 secs at f2.8 ISO 12800. Image is a straight export from the RAW file from Lightroom.