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From hot to cold – these are the most extreme planets ever discovered

Scientists recently discovered the hottest planet ever found, but there are many other worlds with extreme features.

Did comets kick-start life on Earth?

Were the molecular building blocks of life created on Earth or brought here by comets? Experimental results in the journal Science may have the answer.

What is space dust, and can it create life?

What can comets tell us about the birth of the solar system?