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3.4 Searching for Supernovae
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What is a Type Ia supernova?
When you discovered that the universe's expansion was accelerating, what was your initial reaction?
How do we know how much dark energy there is?
Are there any alternative explanations besides dark energy for our accelerating universe?
How else can we confirm that the universe is accelerating due to dark energy?
Which do you think is more important to science—collaboration or competition?