Category: Astronomy


What happen in 2017?

What did we discover in 2017? Another year in the 21st century marked a long-standing conflict in various parts of the world, strange and amusingly weird tweets of the American president Donald Trump, a...


Archimedes – Number PI and Eureka!

Archimedes was Greek mathematician, physicist and astronomer; he first calculated the number pi, found the law of the lever, the law of thrust (Archimedes’ law, Archimedes scale), and wrote very important papers on geometry,...