Why can't we look directly at the sun?
Experts report that you cannot look directly into the sun without proper protective equipment.The concept of everyone is wrong about bulletproof armor
Because bulletproof armor is not a daily use for everyone, there are still many misconceptions about its features and uses.The outer space walk almost turned into the Soviet tragedy
The moment Alexey Leonov made his first space trip in 1965 became a brilliant mark in human history.Video: What happens if you throw acid on your shoes?
The shoe will turn pink, can you dye it this way? Of course not.