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    Charles Richter, Creator Richter Scale  
Charles Francis Richter , was an American seismologist and physicist. Richter is most famous as the creator of the Richter magnitude scale which, until the development of the moment magnitude scale in 1979, quantified the size of earthquake...
 
    San Francisco Earthquake of 1906  
The San Francisco earthquake of 1906 was a major earthquake that struck San Francisco and the coast of northern California at 5:12am on Wednesday, April 18, 1906. The most widely accepted estimate for the magnitude of the earthquake is a mo...
 
    Rachel Carson, American Conservationist  
Rachel Louise Carson was an American marine biologist and conservationist whose book Silent Spring and other writings are credited with advancing the global environmental movement. Carson began her career as an aquatic biologist in the U...
 
    Tunguska Explosion, Russia  
The Tunguska event, or Tunguska explosion, was a powerful explosion that occurred not far from the Podkamennaya (Lower Stony) Tunguska River in what is now Krasnoyarsk Krai in Russia, at 00:13:35 Greenwich Mean Time (around 07:14 local time...
 
    Clair Patterson, Calculated an age for the Earth  
Clair Patterson was a geochemist born in Mitchellville, Iowa, United States. He graduated from Grinnell College in Grinnell, Iowa, received his Ph.D. from the University of Chicago, and spent his entire professional career at the California...
 
    Steven Weinberg, Physicist, Electroweak Interaction  
Steven Weinberg (is an American theoretical physicist and Nobel laureate in Physics for his contributions with Abdus Salam and Sheldon Glashow to the unification of the weak force and electromagnetic interaction between elementary particles...
 
    Stephen Hawking, Physicist  
Stephen William Hawking is an English theoretical physicist, cosmologist, author and Director of Research at the Centre for Theoretical Cosmology within the University of Cambridge. His scientific works include a collaboration with Roger Pe...
 
    Carlo Rovelli, Quantum Gravity  
Carlo Rovelli is an Italian theoretical physicist and writer who has worked in Italy, the United States and, since 2000, in France. He works mainly in the field of quantum gravity and is a founder of loop quantum gravity theory. He has also...
 
    Nasa, National Aeronautics and Space Act  
The National Aeronautics and Space Administration (NASA) is the United States government agency that is responsible for the civilian space program as well as for aeronautics and aerospace research. President Dwight D. Eisenhower establis...
 
    Erik Verlinde, Physicist and String Theorist  
Erik Peter Verlinde is a Dutch theoretical physicist and string theorist. He is the identical twin brother of physicist Herman Verlinde. The Verlinde formula, which is important in conformal field theory and topological field theory, is nam...
 
    Voyager Golden Record, Launched in 1977  
The Voyager Golden Records are two phonograph records that were included aboard both Voyager spacecraft launched in 1977. The records contain sounds and images selected to portray the diversity of life and culture on Earth, and are intended...
 
       
         
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