Edwin Hubble: The Astronomer Who Expanded the Universe
Marking 135 years since the birth of Edwin Hubble, who revealed that the universe is much larger than the Milky Way, showed that it is steadily expanding, and laid the foundation for the Big Bang theory.
James Van Allen: The Scientist Who Reached Into Space
This month marks 110 years since the birth of James Van Allen, the American researcher who discovered the magnetic radiation belts and led numerous pioneering studies in space exploration.
10 minutes 
