1909    Robert Goddard was remembered for his discovery of the two substances
that created rocket fuel. 

1609    Johannes Kepel was remembered for discovering the laws of planetary motion.

1929    Edwin Hubble founded “Hubbles Law” that mathematically shows the speed
that galaxies are  moving away from us.

1933    Karl Jenskey invented a way to predict thunderstorms both near and
millions of miles.... away

1570    Tycho Brake built the finest observatory in Europe.

500   Pythagoras transferred the study of geometry to an  educational
subject.

170BC   Hipparchus was the first to compare observations of some of
the eclipses.

1666    Isaac Newton was the man to discover the laws of
gravity.

1750    William Herschel discovered Uranus with a home
telescope.
People Who Made Space Exploration What It Is Today.