New calculators are added all the time. How not to get lost in all of this knowledge? The Omni Calculators might be exactly what you’re looking for.
The main groups are: Chemistry 39 calculators, construction 59, conversion 36, ecology 17, Everryday life 69, finance 172, food 33, health 217, math 182, physics 201, sports 52, statistics 44, and other 70. I like physics.
Physics is the most fundamental of the sciences that tries to describe the whole nature. Physics calculators cover topics from classical motion, thermodynamics, and electromagnetism to astrophysics and even quantum mechanics.
Subgroups of physics are: Classical mechanics calculators 43, rotational and periodic motion calculators 11, waves calculators 10, optics calculators 11, fluid mechanics calculators 23, atmospheric thermodynamics calculators 22, thermodynamics calculators 22, electromagnetism calculators 44, quantum mechanics calculators 14, relativity calculators 6, astrophysics calculators 13, other calculators 6.
I scrolled down to astrophysics and there I selected Alien Civilization Calculator. New study suggests 36 alien civilizations in our Milky Way. But make your own assumptions and calculate your own predictions.
Photos from https://www.pexels.com/search/alien/