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Does life appear independently on different planets in the galaxy? Or does it spread from world to world? Or does it do both?
New research shows how life could spread via a basic, simple pathway: cosmic dust.
One thing scientists have learned in the past few decades is that life on Earth might have had an early start.
The Earth is about 4.53 billion years old, and some evidence shows that simple life existed here at least 3.5 billion years ago. Some evidence suggests life was here even before that, only about 500 million years after Earth formed when it had cooled down. The life would have been extremely simple, but it may have been there.
But life may not have originated here. Researchers question if there was enough time for life to appear spontaneously in early Earth conditions.
New research examines the idea that cosmic dust could be responsible for spreading life throughout the galaxy by panspermia. Life arose elsewhere, and was delivered to the young Earth. This is not a new idea, but in this work, the author calculates how quickly it could happen.
New research shows how life could spread via a basic, simple pathway: cosmic dust.
One thing scientists have learned in the past few decades is that life on Earth might have had an early start.
The Earth is about 4.53 billion years old, and some evidence shows that simple life existed here at least 3.5 billion years ago. Some evidence suggests life was here even before that, only about 500 million years after Earth formed when it had cooled down. The life would have been extremely simple, but it may have been there.
But life may not have originated here. Researchers question if there was enough time for life to appear spontaneously in early Earth conditions.
New research examines the idea that cosmic dust could be responsible for spreading life throughout the galaxy by panspermia. Life arose elsewhere, and was delivered to the young Earth. This is not a new idea, but in this work, the author calculates how quickly it could happen.
Life Spreads Across Space on Tiny Invisible Particles, Study Suggests
Does life appear independently on different planets in the galaxy? Or does it spread from world to world? Or does it do both? New research shows how life could spread via a basic, simple pathway: cosmic dust.
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