List the Spectral types in order of temperature from Hottest to Coolest.
Match the number with the correct name for that part of the…
Match the number with the correct name for that part of the galaxy.
What was the age of the universe when it became transparent…
What was the age of the universe when it became transparent and photons could travel without running into anything?
What percentage of visible matter is made of Hydrogen?
What percentage of visible matter is made of Hydrogen?
What percentage of all the matter and radiation density is m…
What percentage of all the matter and radiation density is made of Dark Energy?
What percentage of the overall density of the universe is ma…
What percentage of the overall density of the universe is made up of dark matter combined with regular matter and energy?
Use the following table to answer the question. Star A…
Use the following table to answer the question. Star Apparent Magnitude (m) Absolute Magnitude (M) m-M Spectral Type 1 -1.46 1.46 0 F0 2 -0.72 -2.5 1.78 A1 3 0.12 -8.1 8.22 B8 4 0.41 -7.2 7.61 M2 5 -0.27 4.4 -4.67 G2 In which star’s spectrum are the hydrogen lines the strongest?
Which of the following would be considered a Reflection Nebu…
Which of the following would be considered a Reflection Nebula?
What is the minimum mass requires for a star?
What is the minimum mass requires for a star?
The question asked in Olber’s Paradox of cosmology is
The question asked in Olber’s Paradox of cosmology is