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r/askastronomy

72,874 subscribers
For your astronomy-related questions!

Moderators

Updated Jul 14, 2024
u/AstrophysicsCat Active
Added 1 year ago
u/Charlaxy Active
Added 1 year ago
u/Space_Camper Active
Added 4 months ago

Notice: This subreddit is not actively monitored, so the posts here are only a small subset of what exists on reddit.

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What did I see? Sci-Fi Astrophysics Astronomy Planetary Science Black Holes Cosmology
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to r/askastronomy by the-foxe
1 week ago
Preview thumbnail for Is this a galaxy on the middle right? image
Is this a galaxy on the middle right?
What did I see?
to r/askastronomy by Vivaldi786561
1 month ago
How can the Big Bang possibly be a 'creation' of matter?
Cosmology
to r/askastronomy by Low_Resolve_2065
2 months ago
Preview thumbnail for iPhone 13 Pro camera popping image
iPhone 13 Pro camera popping
to r/askastronomy by Temnodontosaurus
3 months ago
How would you feel if telescopes and observatories had unskippable ads which you needed to watch before being allowed to look at stars and planets?
Sci-Fi
to r/askastronomy by beattywill80
3 months ago
Preview thumbnail for How Much Closer To Earth Was The Moon 69 Million Years Ago? image
How Much Closer To Earth Was The Moon 69 Million Years Ago?
to r/askastronomy by Zarien1
3 months ago
Is sunset the same time on a particular day every 4 years?
to r/askastronomy by FaxMachineMode2
3 months ago
What would it take to send a signal that could be easily detected across the entire andromeda galaxy?
Sci-Fi
to r/askastronomy by Peroxide_
3 months ago
What is the lower limit for altitude for large orbiting objects?
to r/askastronomy by DiyhydrogenMonoxide7
3 months ago
Orange lunar looking thing in night sky
What did I see?
to r/askastronomy by Few_Imagination2025
3 months ago
Planet rotation like in video games
to r/askastronomy by Option-Asleep
3 months ago
Does anyone know what that is?
What did I see?
to r/askastronomy by HowSupahTerrible
3 months ago
Preview thumbnail for Does anyone know what could be causing the different temperatures on this planet? image
Does anyone know what could be causing the different temperatures on this planet?
Astronomy
to r/askastronomy by Leather-Exercise7037
3 months ago
Is the Sun ever directly above you in non-equatorial countries?
to r/askastronomy by Rheum_Ribes
3 months ago
Preview thumbnail for Noctilucent clouds ? image
Noctilucent clouds ?
Astronomy
to r/askastronomy by AssistanceKey8400
3 months ago
If a small galaxy collided with the milky way but it was on the otherside of the milkyway, how long would it take for us to feel the effects?
to r/askastronomy by usernameillremember0
3 months ago
Is there a website where I can see where the planets will be in the sky in the future?
Planetary Science
to r/askastronomy by Awesomeuser90
3 months ago
When you test to determine planet criteria for a body proposed to be binary planets, do you calculate the dominate its neighbourhood with or without the other planet?
Astrophysics
to r/askastronomy by bipocni
3 months ago
Preview thumbnail for Have there been any follow-up studies regarding the Alignments of Radio Galaxies in Deep Radio Imaging of ELAIS N1 image
Have there been any follow-up studies regarding the Alignments of Radio Galaxies in Deep Radio Imaging of ELAIS N1
to r/askastronomy by BasketStraight
3 months ago
Preview thumbnail for There's a light in the sky but it's werid image
There's a light in the sky but it's werid
to r/askastronomy by tangerinebb
3 months ago
Preview thumbnail for what would happen between the earth and the moon if the earth stopped spinning? image
what would happen between the earth and the moon if the earth stopped spinning?
to r/askastronomy by AdamAtlantean
3 months ago
Accuracy of equinoctial markers overtime
Astronomy
to r/askastronomy by macrohard_certified
3 months ago
Potential asteroid collision with the Earth
to r/askastronomy by ADizzy_07
3 months ago
Does Gravitational lensing besides magnifying light, also magnify causation?
to r/askastronomy by DiGiornoForPyros
3 months ago
Asteroid Identification
to r/askastronomy by Educational-Ad1776
3 months ago
Choosing between Flux or Magnitude Data types.
Astrophysics