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Long-Ago Supernovae Littered Earth
Roughly 2 million years ago, as the human ancestor homo erectus was descending from the trees, two supernovae exploded nearby and showered Earth with debris.
Brightest Supernova Baffles Astronomers
The most luminous supernova ever discovered, ASASSN-15lh, challenges a popular theory for blazingly bright exploding stars.
The Most Luminous Supernova
Astronomers have discovered an exploding star that belongs to the "superluminous" class, and it's the most luminous one ever found.
GRBs: A New Standard Candle?
Astronomers might be on the brink of developing a new rung on the cosmic distance ladder.
