The work of this harvard college observatory scientist made possible the first accurate determination of extragalactic distances by what is often called henriettas law?
Answer / Himanshu Chauhan
Henrietta Swan Leavitt's discovery that brighter Cepheid variable stars have longer periods.
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The apparent speed of the sun along the ecliptic is known as?
Why stars are seen in colours?
In which constellation is abig nebula still giving birth to stars?
Explain how far away from earth, is space?
How stars produce energy?
The time taken by aryabhatta for one revolution around the earth?
These doughnut shaped zones of atomic particles consists of electrons and protons captured by the earths magnetic field from the solar winds and are called?
Which is the only star of the milky way galaxy?
The persieds meteor showers are viewed in the state of maine during what month?
Give the common name for the phenomenon which is the result of sunlight reflecting off the earth and faintly illuminating the darkened portion of the moon?
How far from earth, is the moon?
Who were the ancient indian astronomers?