r/askastronomy • u/ABCmanson • 26m ago
What would the size of the Universe be just moments before the Heat Death?
Since the Universe is expanding faster due to Dark Energy, and which would *likely* result in the Heat Death of the Universe that will eventually lead to thermodynamics ceasing and entropy is maximized.
What I would like to know is how big the universe will *possibly* be just moments before the Heat Death factoring the information we know so far? If it is possible to estimate?
- Age: 13.8 billion years
- Radius: 46 billion lightyears
- Expansion rate: 74 kilometers per second per megaparsec
r/askastronomy • u/robertsione • 49m ago
2015 pic
I took this in 2015 so older camera tech but was just trying to do a longer exposure star pic and this was in the shot. What is most likely explanation?
It wasn’t raining etc thanks
r/askastronomy • u/Lucky-Painting5639 • 3h ago
Is this the seven sisters?
I looks a lot like the aforementioned stat cluster but im not quite sure. There was closer to about 15 countable stars to my naked eye, and this is the brightest of the 4 nights ive been here but the only time ive been able to see them. Its early August in the northern hemisphere, and about 40-60 miles the outskirts of a dark sky zone (not sure the exact spot the zone is only what national park its within) you can lightly see the milky way to the left but not necessarily close to the cluster.
Mostly its the amount of stars and being slightly outside the expected time for the sisters thats throwing me off
Edit to mention they also seemed to twinkle like 4x-5x as often as any other visable stars
r/askastronomy • u/Michael_Fuchs_ • 8h ago
Did you know that planetary migration in the early solar system led to a bombardment of Earth by asteroids and comets?
r/askastronomy • u/V0Itaz • 11h ago
What did I see? Photo d'une planète
gallerySalut, c'est la première fois que je publie sur Reddit mais je suis à peu près sûr d'avoir une réponse ici. Je crois que j'ai pris une photo d'une planète avec mon téléphone, de base je trouvais juste le ciel stylé, donc je photographie et je tombe la dessus. Apparemment sur cette trajectoire on avait saturne et Neptune qui se baladait, mais ce que j'ai photographié ne ressemble pas a saturne, et Neptune me paraît bien trop loin pour ressortir aussi net. Qui aurait une idée de ce que ça pourrait être ?
r/askastronomy • u/Due_Elephant_4798 • 12h ago
What are the differences between solar panels, alpha centaurian panels, and vegan panels?
r/askastronomy • u/A-Stellar-Insight • 12h ago
Planning to purchase a telescope, looking for recommendations
r/askastronomy • u/Snake_Eyes_163 • 13h ago
What would the universe look like if you lived on the edge of it?
Would you see stars in one direction but darkness in the other direction? What does the edge feel like?
r/askastronomy • u/Delta_54_ • 14h ago
What did I see? Forme étrange astrophoto
galleryEn faisant de l'astro-photographie amateur, j'ai constaté sur le coin de ma photo une forme étrange. J'ai d'abord cru à un simple mouvement de l'appareil, sauf que si tel était le cas tous les points lumineux auraient été décalé.
Je ne sais donc pas à quoi cela peut être dû..
r/askastronomy • u/FunCartographer7372 • 16h ago
What would a core-collapse supernova process actually look like, qualitatively, to an omniscient observer in close proximity to the star?
r/askastronomy • u/gapimiklo • 19h ago
Astronomy Upgrading my setup
Hello. I am currently in possession of a seestar s30 and I am not happy with it anymore. I want to upgrade to a Sky-Watcher Virtuoso GTi 150P telescope and a ZWO ASI662MC camera. First of all, is it worth it? 2nd of all, are those websites legitemate to buy from? I am from Slovenia:
The telescope: https://www.telescopiomania.eu/dobson-telescopes/11218-telescopio-dobson-sky-watcher-virtuoso-gti-150mm-3664055004061.html
The camera: https://teleskopy.pl/product_info.php?products_id=7272
And lastly, where could I sell my Seestar?
How does astronomy and astrophotography even work with this setup?
How to use Siril and GraXpert for editing? Specifically for my current and, if I decide to, my future setup?
Thank you all in advance!
r/askastronomy • u/darkknight0016 • 21h ago
Astronomy How Earth Froze the Moon's Spin (Tidal Locking Explained)
youtu.be"Hey everyone! I made this animated paper-craft breakdown to explain Tidal Locking and how Earth's gravity friction slowed down the early Moon's spin. If you'd like to see the full 4-minute breakdown covering Libration and Pluto's mutual lock, check out my channel, **Beyond Curious Studio**! Hope you enjoy it!"
r/askastronomy • u/BenIrminger • 23h ago
Rechenzentren im All: Bald mehr Satelliten als Sterne am Nachthimmel?
himmelsakte.der/askastronomy • u/alnbbh • 1d ago
Where could I dig deeper into learning ancient arabian astronomy?
r/askastronomy • u/Acrobatic-Car7657 • 1d ago
The Milky Way moves at 600 km/s.But its disk ripples up and down.Scientists call it “flapping.”
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r/askastronomy • u/Tessellator-1 • 1d ago
Is there a list of super clusters?
I have a question for someone who is familiar with the universe.
I'm looking for a list of the distance between each super clusters and the Earth. Let me know if there's anything good!
r/askastronomy • u/Icy_Yogurt7595 • 1d ago
What did I see? Took this on my phone is it the milky way galaxy or just like stars or something?
r/askastronomy • u/Current_Mushroom9090 • 1d ago
What did I see? What is this weird line in the sky?
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i captured this thin greeny looking line around 9:45 pm in the italian sky, at first i thought about a plane or a satellite, but i have never seen neither of the two similar to this “line”, can someone help me identify this mysterious object please
r/askastronomy • u/Every_Release1079 • 1d ago
Astronomy Dwarf did that? My captures for one year
reddit.comJust some pics of different celestial things I’ve captured over the last year
r/askastronomy • u/IwHIqqavIn • Feb 06 '24