The same sound will sound different to your hearing if the source of the sound is moving towards you or moving away from you. This is called the Doppler Effect.
Presentation by YouTuber: Interesting Engineering
Some symbols from a writting style known as Nsibidi from south eastern Nigeria and Cameroon (attributed to the Ekoi people). Some symbols are found on artefacts dated to the 5th century AD.
Stars have planets around them πͺ
There are billions of stars in a galaxy
There are trillions of galaxies
So the probability of life outside of our solar system is high.
The asteroid that got dinosaurs extinct landed in southeastern Mexico. Part of it was on land and another part in the Gulf of Mexico. It formed the Chicxulub Crater. This happened 66 million years ago.
