dChan
Anonymous ID: f85544 Dec. 21, 2024, 1:11 p.m. No.22206538   🗄️.is 🔗kun   >>6551 >>6556 >>6563 >>6665 >>6762 >>6847 >>6868 >>7042 >>7047 >>7075 >>7173 >>7180 >>7195

Elon Musk

@elonmusk

5h

The vast emptiness of space

Brian Roemmele

@BrianRoemmele

14h

Matter is sparse and rare in the universe.

 

The scale of emptiness in the universe is staggering. Consider this: The Milky Way has a galactic volume of ~ 8 trillion cubic light years that contains on the order of ~100 billion stars. This is almost all just empty space filled with tiny points of light when viewed from a distance. How empty is the actual space?

 

You can fit the total cubic volume of all the stars in the Milky Way into a cubic light year. Not just once, in fact, you could fit all the stars from 3 billion Milky Ways into a single cubic light year.

 

What does this say about the rarity of matter within the Milky Way? It says that matter exists within the Milky Way at a rate of 1 part per 24 sextillion of empty space or 1 part per 24,000,000,000,000,000,000,000.

 

Dec 21, 2024 · 4:00 PM UTC

https://twitter.com/elonmusk/status/1870499617210826944

Anonymous ID: f85544 Dec. 21, 2024, 1:40 p.m. No.22206661   🗄️.is 🔗kun   >>6676 >>6679 >>6868 >>7075 >>7173 >>7180 >>7195

NWS Weather Prediction Center

@NWSWPC 4h

 

🌎☀️Happy Winter Solstice!Today marks the first day of astronomical winter in the Northern Hemisphere. If you go by meteorological seasons, it has actually been winter since December 1st. Curious why we have different seasons? Learn more here: https://www.noaa.gov/education/multimedia/infographic/infographic-meteorological-and-astronomical-seasons

 

Dec 21, 2024 · 5:05 PM UTC

https://twitter.com/NWSWPC/status/1870515884475011193