The evidence for the existence of dark energy is primarily based on observations of supernovae, specifically Type Ia supernovae. These supernovae are used as "standard candles" to measure distances in the universe. Observations have shown that these supernovae are moving away from us at an accelerated rate, which indicates that the expansion of the universe is accelerating. This accelerated expansion is attributed to dark energy, a mysterious form of energy that comprises a significant portion of the universe.
In summary:
- Type Ia Supernovae: Evidence for dark energy comes from observations showing that these supernovae are moving away at an accelerated rate, indicating the universe's expansion is not only continuing but accelerating.
Thus, the evidence for dark energy is best represented by supernovae that are moving away at an accelerated rate.
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