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Sam langley invented what instrument, which allows astronomers to measure the energy output of the sun and other stars?
Explain how fast is the solar wind?
The persieds meteor showers are viewed in the state of maine during what month?
Which is the only star of the milky way galaxy?
How many stars are there, which are normally visible?
When a superior planet is at quadrature in reference to the earth, what is its elongation in degrees?
How many stars are there in the whole universe?
How many moons do Neptune planet have?
Which is nearest star visible to naked eye?
Most astronomers believe that these celestial bodies are at the center of quasars and are the main reason for their large energy emissions?
Why stars are seen in colours?
Explain how does gravity affect life on pluto?
How many planets are now in the solar system?
What do you enjoy most being an Astronomer?
Which is the star nearest to earth?
