World Space Week 2017 October 8 Space Fact

On October 8, 1873, Ejnar Hertzsprung was born in Copenhagen, Denmark. Herzsprung calculated the distance of several nearby Cepheid variables. Since Cepheid variables have such a consistent luminosity, they can be used to determine the distant of objects where they reside. In 1913, Herzprung used this technique to estimate the distance to the Small Magellanic Cloud, a dwarf galaxy that orbits the Milky Way galaxy. He is well know for his part in developing the Hertzsprung–Russell Diagram which classifies stars by age and  luminosity.

World Space Week runs from October 4 – 10, 2017.

Check back tomorrow for another great World Space Week Space Fact.

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About Robert Madsen

I am an amateur astronomer and have been interested in astronomy since I was four years old. By eight had read Fred Hoyle's Astronomy textbook. By 6th grade I had read every astronomy book in my school's library. You get the picture! I love astronomy and space exploration. I am a member of the Planetary Society, Mars Society, and of course, Western Colorado Astronomy Club.

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