navigating the sky with antromeda galaxy..
https://www.skyatnightmagazine.com/advice/star-hops-navigate-night-sky
Posts
get invisible with mirrors - science experiment
https://www.youtube.com/shorts/VP91T6bPlA0?feature=share
Sodium and Chlorine Reaction - The making of table salt - explosion
https://www.youtube.com/watch?v=oZdQJi-UwYs