RE: https://mastodon.social/@theperpetuallycurious8/116103397604156564

🦕 Did you know that dinosaurs experienced Earth at different positions covering about 71% of a complete galactic orbit, which means their night skies changed throughout their evolution? A Brachiosaurus in the Jurassic and a Tyrannosaurus rex in the Cretaceous looked up at different constellations.

✍️ The article follows how dinosaur eras moved through changing cosmic neighborhoods and changing night skies: https://TPC8.short.gy/Wk6XTDTU

#GalacticYear #Dinosaurs #MilkyWay #Astronomy #TPC8

RE: https://mastodon.social/@theperpetuallycurious8/115979418461981577

💡 Did You Know about Pole Star Succession?

⭐ Due to Earth's ~26,000-year axial precession, different stars serve as our north pole guide: Thuban in ancient Egypt, Polaris today, and Vega near the pole around 14,000 CE. The sky itself is a slow-motion story.

✍️ The full cosmic journey lives in the original post.

#Astronomy #Cosmos #PoleStar #GalacticYear #Space #Science #Astrophysics #TPC8

🌌 The stars your ancestors saw no longer exist in those positions. Earth has completed 20 galactic orbits since its birth, each taking ~230 million years through entirely different cosmic neighborhoods.

✍️ Discover your galactic journey and see Earth through deep time: https://TPC8.short.gy/Wk6XTDTU

✨ Matter that mapped its own journey

#Astronomy #CosmicPerspective #GalacticYear #Earth #Milkyway #Galaxy #Science #Space #TPC8

A #GalacticYear puts the ancient events into a more understandable scale, but also shows how insignificant humanity is

https://en.wikipedia.org/wiki/Galactic_year#Timeline_of_the_universe_and_Earth's_history_in_galactic_years

🌌 Ever think about time on a galactic scale?

A galactic year is how long it takes our Solar System to orbit the Milky Way. One orbit takes about 225–250 million Earth years, often rounded to 230 million.

Even after about 4.6 billion years, we have completed only around 20 galactic years.

#GalacticYear #MilkyWay #Astronomy #Space #Cosmos #Science #SolarSystem #ThePerpetuallyCurious #TPC8

New Episode: hpr4178 :: Today I learnt (2024-07-27)

Hosted by Dave Morriss on 2024-08-07 is flagged as Explicit and is released under a CC-BY-SA license.

Tags: #GalacticPlane, #GalacticYear, Extinction, #Millilitre, #MeibomiumGlands.

https://hackerpublicradio.org/eps/hpr4178/index.html