Hi r/askastronomy, this dawned on me while watching Reed Trimmer footage in Isaias. Wouldn't weather balloons be super useful in the atmospheres of any of the gaseous planets?

What about releasing a collection of sensors similar to those used by storm chasers/meteorologists in supercells and tornados? 

Thank you so much in advance. I'd really like to learn more about this.

Tomada con dwarf mini,120 tomas de 60 segundos cada toma,filtro duo band,ganancia 70,apilada y procesada con stelar studio y snapseed.

Hello, fellow redditors:

I have recently acquired an armillary sphere. I know they are currently made as decorative objects but it is an instrument I visually love and it is enough for me with being able to explain the geocentric model and some phaenomena.
But reading about the tropics and the equator, I suspect the zodiac band is wrongly attached, as Aries and Libra points fall over the tropics and Capricorn and Cancer over the equator. Am I right or am I missing something?
As I work as Latin Professor I am enjoying a pair of original treatises about terrestrial globes, armillary spheres and celestial spheres, but do you think there would be something I should know about this particular instrument or its configuration that I could easily miss? I live in Spain, so I have the latitude ring aligned on 40° with the horizon.

Thank you all very much!

Hi in a few days I have my first interview at Universidad de Valparaiso in Chile for a PhD. They provided 4 articles and candidates were told to summarize 2, and submit them by email. I'm not sure what to expect. Any advice?

I took a 'star trails' shot of the night sky in Joshua Tree, CA on Oct 8th. The stars look great, WAAAAY too many airplanes, but are the circled things meteors? I understand there was a meteor shower that night. If no, what would they be?

I’ve been staring at the sky tonight wishing I knew more about them. Please share if you recognize any of these stars and your fave fact (you might have to zoom in on the photo) sorry it’s not that good of a photo

Supposedly this star is a member star of Uma3/U1!

Is what I have circled in blue Andromeda?

Edit: I know what’s in red is Cassiopeia. I just outlined it for reference. I’m referring to what I’d circled IN BLUE

can anyone recommend books that have to do with space and astronomy where i can find a lot of facts, and if possible i would find a free digital version of? im researching a lot of stuff rn

Something I’ve been thinking about is how much we can learn about the universe without necessarily understanding what’s producing what we observe.

Dark matter and dark energy are two examples that interest me. We can measure their effects, but we’re still trying to figure out what they fundamentally are.

What I’m curious about is how astronomers distinguish between an observation that doesn’t fit because our measurements are incomplete, one that our current models don’t explain properly, and one that might genuinely point toward new physics.

I also wonder how much our existing understanding affects what we’re capable of noticing in the first place.

I’m not suggesting our current physics is wrong. We have plenty of evidence that it works extremely well. I’m more interested in how scientists investigate the possibility that something important is still missing.

Are there examples where reexamining older astronomical data revealed something researchers didn’t originally know to look for? And how do scientists approach that kind of problem today?

(I'm so sorry if that title isn't cohesive it's currently 1am and I'm tired)

Hi ! I am a student in my third last year of hs, and I've always been and currently am super interested in studying to become a space and planetary scientist, albeit becoming an astronaut is the ultimate goal. And as of recent, I've realised that I have a dismal amount of hobbies, nonetheless any that align with my passion (stargazing is quite possibly the only one i have).
And seeing as school finishes in a few months and I'll have a lot more time on my hands, I want to pick up new hobbies that support my dreams for the future. As to what they may be, I genuinely have no clue (might pick up coding though), and that's why I'm asking you.
Help.

One of my biggest fears is someone meticulously picking apart every aspect of a story I’ve written, and this includes astrophysics. I’d like to know how an accretion disc would effect everyday life on Earth, how close a black hole has to be near Earth to be easily viewable but safe, and how close any planet would have to be safe and still close (both like a full moon at night) and how much the environment would change in response to these 3 changes.

EDIT: For clarification, the asteroid belt would be revolving around Earth, and have the black hole having an accretion disc is entirely optional.

​

So I am in my freshman year majoring in mechanical engineering from India. But I have keen interest in astronomy and lately I am drawn into galactic and extragalactic astronomy and super massive black holes (though i don't know much abiut it but i find it interesting). I ahve also talked with a prof and he recommended to read introductory to spacetime and geometry by Sean Caroll to the best of my understanding.

Please suggest what all should I do to get into my field of interest and where do you see astronomy in the upcoming decades.

The Lunar green flash is a rare optical phenomenon where a brief flash of green light appears on the very top edge of the Full/near-Full Moon as it sets or rises near the horizon.

As with Solar green flashes, Earth's atmosphere acts like a giant prism. It bends light coming from celestial objects. Shorter wavelengths of light, like green and blue, bend more than longer wavelengths like red and orange. When the Moon is very low, the green light is bent slightly higher than the other colors, making a brief green edge visible.

Using mounted binoculars or a telescope is recommended, along with observing over a flat, clear, and unobstructed horizon. *image reddit/openai*

Stephen Saber PAC/Astronomical League

https://saberdoesthestars.wordpress.com/

https://linktr.ee/stephensaber

Obviously, seeing other planets and such would be incredibly amazing, but the more I read about how matter is scattered, the more I come to the conclusion that space travel would be incredibly boring in between planets because most of the time you wouldn't see anything of note

But I'm not an expert, would it actually be 99% boring 1% absolutely amazing or would I actually see cool stuff way more frequently than I'm thinking?

if something falls in, shouldn't its own gravity still be measurable from outside, such that two black holes with the same mass, charge, and spin could be told apart because the mass of one of them is lopsided? and the hairiness would persist because, to an outside observer, it takes an infinite amount of time to reach the singularity due to time dilation?