What is luminosity measured in?
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What is most of the mass in our galaxy?
What is most of the mass in our galaxy?
As the universe cooled, it went from being _________________…
As the universe cooled, it went from being _________________ to being __________________.
Which luminosity class is the brightest?
Which luminosity class is the brightest?
A common misconception is that black holes go sucking up “st…
A common misconception is that black holes go sucking up “stuff”. Why is this false?
What were the results from the Sloan Digital Sky Survey?
What were the results from the Sloan Digital Sky Survey?
Which best describes the legislative system in France relati…
Which best describes the legislative system in France relative to the executive?
Maquiladoras are:
Maquiladoras are:
Descendants of Dutch, French, and German colonists who arriv…
Descendants of Dutch, French, and German colonists who arrived in the seventeenth century developed their own language called:
Approximately what percentage of South Africa is black?
Approximately what percentage of South Africa is black?