What is a galaxy?
What do scientists call the initial explosion that resulted in the formation of the universe?
What component of the electromagnetic spectrum can we see?
Which of the following is a type of galaxy?
Which type of stars are very hot but low in brightness?
Which wavelength has the highest frequency?
Where is the Sun located?
What is plotted on the x-axis of the H-R Diagram?
What is a large cloud of gas and dust where stars are formed?
What type of galaxy galaxy is shaped like a rounded or flattened ball?
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