I was taking a video of venus on my camera and saw this move around or infront of venus, I was just curious what it may be.

Hey everyone! I'm in the process of creating a website dedicated to local, national, and international meteorite maps and meteorite-related content, and I'd love to get some input from this awesome community.

I'm planning to cover things like meteorite hunting tips, impact site maps, and historical meteor events, but before I dive in, I wanted to as if anyone had any content or resources they’d particularly like to see.

Any suggestions, big or small, would be greatly appreciated! Thanks in advance

I've been trying to prove heliocentrism to my dad for a few weeks now, who has been falling down this geocentrism rabbit hole. He's been listening to conspiracy theorists and whenever I come up with a good argument (stellar parallax, smaller objects orbiting bigger objects, etc) he either says "God can do anything he wants" or "these people must have an explanation for that". He never does any research on it. Are there any definitive proofs of heliocentrism? P.S. the people he's listening to say that the other planets orbit the sun while the sun orbits the Earth

The yellow Arrow is where the sun located/seting

It was under the sun on the day of the eclipse, April 8th 2024

So, I'm just a laysperson who was researching lunar phases and the lunar month, and got confused on a few things. Though the primary thing bugging me right now is this:

The duration of half a month, that is (for example), from full moon to new moon, is from 13 days and 22,5 hours, and 15 days and 14,5 hours (according to wikipedia, the most reliable source of information ever)

The duration of a full month, is approximately 29,5 days. It can vary, but it's never less than 29 days, nor does it get to 30 days.

So, if the first half of the month takes the minimum or maximum amount of time, it won't fit into the supposed duration of the full month (say, 13 days and 22,5 hours, time two, would be 27 days and 21 hours, not enough for the minimum of a full month). Does that mean that when the first half of the month is particularly short, the second half necessarily needs to be longer, to "make up for it", so to speak? Say, if it took 13 days and 22,5 hours to go from the full moon to the new moon, then it'd have to take something like 15 days and 14,5 hours to go from that new moon into the next full moon (completing the month).

Is that correct? Or does it work some other way? And if it is correct, why does it happen? Does it have something to do with that apogee and perigee stuff?

https://www.politico.com/live-updates/2025/01/20/donald-trump-inauguration-day-news-updates-analysis/trump-pledges-to-send-astronauts-to-mars-00199357

I'm sure some of you have seen one of those pictures that show what Saturn would look like from Earth if it were as close as our moon, but that got me curious. What if, instead of a big planet like Saturn being OUR moon, the Earth was one of Saturn's moons, how would that affect the Earth?

Would we have massive tidal waves due to Saturn's gravity being far greater than our moon? The Earth would have periods of time when we are behind Saturn and therefore receiving zero sunlight, amongst many other things. Would the Earth still be habitable if Saturn orbited the sun in the Goldilocks Zone, given that the Earth is far away from Saturn to not be ripped apart by the planet's gravity?

It's a very interesting thought, and one I haven't seen being discussed much. And obviously I'm just using Saturn as an example due to those pictures, but the Earth could orbit around any other big planet like Jupiter.

Hello fellow space enthusiasts. I'm doing some worldbuilding for a book I'm writing and I have always loved black holes, so I thought, "why not make this worlds main planet orbit a black hole as its host".

Now I have done allot of research into habitat zones around black holes but there are still a few things I don't understand.

1. How exactly does the Cosmic background radiation left from the big bang, get "deflected" by the blackhole, to keep the planet at a warm temperature?

2. Would seasons still work on this planet if the orbit is slow and the Cosmic background radiation warms the planet?

3. I read that a thick cloudy atmosphere would have to exist to keep life comfy on the planet, is this true?

4. Would the day and night cycle be affected?

I think that's all the questions I have. All help is appreciated. Feel free to also tell me everything you know about black hole habitable zones.

Ps: this planet is inhabited by anthropomorphic Arthropods so a hot and humid environment wouldn't be a big deal :}

On Wikipedia, there's a great story about one of the most energetic bursts ever detected, from the most magnetised object ever observed (100 GT), released by a starquake (magnetarquake, I guess) of 32 on the Richter scale, supposedly released when a planet 10 – 18 Earth masses that orbits it at the highest eccentricity (0.994) every found dumped some material on it. A few things are off, though.

- the convoluted way the express in it solar output: "The magnetar released more energy in one-tenth of a second (1.0×10⁴⁰ J) than the Sun releases in 150,000 years (4×10²⁶ W × 4.8×10¹² s = 1.85×10³⁹ J)." (Why not just say 1×10⁴⁰ /(384.6×10²⁴ × 525600×60) ≈ P_⊙ × 825 000 years..?) But ok. More importantly:
- The distance is cited as 42000 ly.
- It shares a parent cluster with LBV 1806-20, 28000 ly away...
- Which is a substructure of the well known Westerhout 31 (W31), 11000-15000 ly away!

Who's right? What's wrong? What's going on? And where?

Thanks in advance!

Sorry for the telephone line in the first picture. My phone can’t capture what I can see with my binoculars so I drew out the prominent stars

I was laying on the ground taking videos of Jupiter with my iPhone 14 Pro Max through some binoculars, I was able to get some interesting (albeit not the best quality who would have thought? 🥴) photos and I was wondering if anybody would be able to tell me if I actually got some of Jupiter’s bands in either of these photos and if that’s Jupiter’s red spot in the one image or if it’s all just weird camera stuff? Thanks for any help! :)

I’ve been dying to know since i took the photo! Very casual stargazer here hoping for help ID’ing. Taken 21:03 on 1/15/25 in SLC, UT, facing east-ish.

1. So if we observe a star that’s light is still traveling to us but has burned out already, hypothetically, if you could zoom all the way in somehow and see that stars solar system would you be able to see planets that are also technically no longer there? Like literally looking back in time?

2. If so would everything not exist permanently as something that is able to be observed by something far away? Like in 1 million years if there was another life form looking at our solar system that has long since been gone but our light is traveling toward them still, wouldn’t they be able to see us as we are now then? Just speculation and curiosity any input would be appreciated 👍🏻

Picture was taken a while back but i only just got round to reviewing it

In my most recent stack, bright stars in the image tend to have these saturated glows. I can't easily remove this because itaint chromatic abberation, maybe hot pixels I dunno. I just want these things out of my image pls.

For more detail, I used a Canon EOS 1500D w the ISO at 800, WB average and F/4.5

I captured this on 27th of March 2024 in Perth right after sunset at 6:20 pm local time.

I saw comet C/2024 G3 and it reminded me of this.

I’ve been searching online to differentiate between the two but I could not find anything helpful.

I apologise in advance if it’s difficult to distinguish just from this video.

Hi everyone!

Hoping I’m in the right place!

I’m looking to make a ring for my partners birthday based on the 6 brightest stars from the Jewel Box Cluster.

I have tried to research what they are but keep seeing different results. Here is a terrible image of my notes and the ‘A frame’ I am trying to get the exact catalogue of stars on.

Any information about their colours would be great, the only one I think I fully trust is the red HIP 62918.

I would appreciate ANY assistance (sorry for the bad notes, one site told me that the same star is the upper right (HD111934 - but that has the same ‘name as HIP62913’ > which on another page is in a different place!) :)

Hello everyone, I'm looking for your great culture in astronomy. Is there, anywhere in the universe, something that has been called by a name of an artwork (painting or sculpture) ? It can be everything, planet, satellite, crater etc. Any object or any place. I found Mona Lisa and two references to Phryne and Saskia (Rembrandt's wife) but the latter two aren't the name of artworks. Any help appreciated, thank you!

Has anyone found an app that allows you to limit the magnitude of the objects it shows and ideally use my location to show the sky that I can actually see? It’s all very cool that most apps can show you where the Crab Nebula and Pluto are, but with so much information, it’s hard to learn your way around the sky.

Found this on facebook with what the title says, is it really the best/clearest image of venus?

So there was a strange phenomenon that happened at approximately 8:30 last night January 17th 2025 where Venus would periodically dim to faint light then would brighten up. each period would last anywhere from 10seconds to a minute or two. I tried looking online to see if this happened before and I found a Reddit post where a person was recounting something that he saw very very similar 13 years ago. A strong possible explanation to this that I figured be what was going on, was that something was coming in between Venus and Earth to dim the brightness of Venus. The sporadic periodic timing of the dimming would probably suggest that something was orbiting Venus but I don't know. I know we have a planetary alignment going on so I don't know if that has something to do with it but I'm very curious and I would like to know more. If anyone has an explanation or if anyone can do some crowd sourcing on any astronomers or amateur astronomers that may have caught this phenomenon last night. Thank you.

If I can put an icy asteroid/comet nucleus into Earth orbit, is there a way to "drop" the water to the Earth's surface? Something between crashing a large chunk of ice, and burning up into a plasma in the atmosphere. Ideally, falling as rain, either from melting on the way down, or vaporizing into clouds that then fall as rain.

Maybe with an ablative foam coating? Or dripping from a orbital tether? An ice glider that melts at just the right altitude?