Asteroids and comets appear to be a much more important supplier of organic molecules on Mars than expected. Until now, astronomers assumed that the organics on Mars mainly came from dust particles from space. Now, computer simulations by an international team of researchers led by Dutch astronomers indicate that one third of the material comes from asteroids and comets.
In 2015, the Mars rover Curiosity discovered remnants of organic molecules on Mars. Scientists wondered how these organic molecules had ended up on Mars...
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