Sam langley invented what instrument, which allows astronomers to measure the energy output of the sun and other stars?
114The hydrogen envelope that surrounds the comets nucleus derives its hydrogen most directly from?
181In the doppler effect, what is the correct term for the change in the color of light when an object that is emitting light is moving toward the observer?
154Which moon is the only other body in our solar system, besides the earth, that has an atmosphere of mostly nitrogen?
125
What is the constant called that is the average flux of the suns energy arriving at the earth?
Which of the constellations cannot be seen in the summer sky of the northern hemisphere?
How important is recording observations in Astronomy?
When did solar system come into existence? What is the expected life of solar system?
Explain how is venus different to earth?
What is heavenly ganges ( milky way ) galaxy?
How many earths can fit into jupiter s great red spot?
What are super galaxial nebulae?
Do black holes exist in reality?
Do black holes really exist?
How many moons do mars have?
Is the gravitational pull on an object equalized if the object is at the center of a planet, i.e. Surrounded by the mass of the planet, which is creating the gravity?
What do you enjoy most being an Astronomer?
Is the gravitational pull on an object equalized if the object is at the centre of a planet, i.e. Surrounded by the mass of the planet, which is creating the gravity?
What is super galaxy?
