By 2040, ~40% of the images from Hubble Space Telescope, and more than 96% from new and future space telescopes like SPHEREx, ARRAKIHS, and Xuntian will be contaminated by internet satellite constellations.

Read our new NASA article in Nature:
nature.com/articles/s4158…

not to forget the contributions from Caroline Herschel whose catalogue of 500 nebulae and clusters was published first in William Herschel's name, and her work on reformulating the known 2500 objects at the time into a format John could work with! :)

A patch of the sky from a long exposure shot on an iPhone. There is a blue-ish hue throughout, with hundreds of stars scattered. A faintly defined streak of grey dust clouds is in the center of the shot, tilted towards the top left, which is the Milky Way.

I managed to capture the Milky Way in Valberg over summer, from a simple 10 second exposure on the iPhone. Rural France is very pretty!!

I’m a PhD student doing cosmology! :) love the astro community here

yes

@bot.astronomy.blue signup

INTRODUCTION The time will come when diligent research over long periods will bring to light things which now lie hidden. A single lifetime, even though entirely devoted to the sky, would not be enough for the investigation of so vast a subject... And so this knowledge will be unfolded only through long successive ages. There will come a time when our descendants will be amazed that we did not know things that are so plain to them... Many discoveries are reserved for ages still to come, when memory of us will have been effaced. Our universe is a sorry little affair unless it has in it something for every age to investigate... Nature does not reveal her mysteries once and for all. - Seneca, Natural Questions, Book 7, first century

absolutely love this quote in the introduction to Cosmos (Carl Sagan). How beautifully put… 🔭

not a stupid question at all! The Universe is “flat” in its intrinsic geometry, not its overall shape in the usual sense. That means angles and volumes in space behave in the same way as a Euclidean grid would: triangles sum to 180°, parallel lines never touch, etc.

The quote from the post, in Darwin’s near illegible scrawl.

"But I am very poorly today & very stupid & hate everybody & everything. One lives only to make blunders."

Charles Darwin, who sometimes dealt with a pretty bad case of the Mondays, was born OTD in 1809. 🧪 🦤

This quote is found in a letter to Charles Lyell:
www.darwinproject.ac.uk/letter/DCP-L...

An extension to the graph where the happiness goes back up as ancient Population III supernovae are discovered but quickly drops down as they break LCDM cosmology at too high redshifts

a small extension for early Universe astronomers ;)

21-cm global signal from REACH or other experiments?🤞:)

Black Holes vs Regular Holes xkcd.com/2844

@currysmologist.bsky.social "you know how there's girl dinner, whereas we have boy lunch, which is just not eating"

Hi folks! Jumping off the hell site for fresher grounds here. Would love to find old moots back :))