A study conducted by NASA scientist Vladimir Airapetian revealed the sun was 30% less bright around three billion years ago, which could have frozen Earth.
However, superflares from the young sun may have led to nitrous oxide production, a greenhouse gas 300-times more potent than carbon dioxide, on Earth.
This may have helped Earth hold onto heat, the study added.
A study conducted by NASA scientist Vladimir Airapetian revealed the sun was 30% less bright around three billion years ago, which could have frozen Earth. However, superflares from the young sun may have led to nitrous oxide production, a greenhouse gas 300-times more potent than carbon dioxide, on Earth. This may have helped Earth hold onto heat, the study added.
