What is the name for the celestial body of interstellar gas and dust where stars are sometimes born?
What moon of neptune orbits in a retrograde direction?
When a superior planet is at quadrature in reference to the earth, what is its elongation in degrees?
How big is the universe?
The persied meteor showers are viewed in the state of maine during what month?
Which of the is not another name for the pleiades?
The time between two successive meridian transits of the sun as observed from a stationary spot on the earth's surface is called?
In which year was western astronomy included in the indian curriculum?
How is venus like earth?
Which planet in our solar system has the most circular orbit?
Explain how big is venus?
Explain how fast is the solar wind?
How many half- moons are there in a lunar cycle?
Tell me how many moons does neptune have?
What is distance from the earth to the moon?
