Exoplanets 101: Looking for life beyond our Solar System
This artist's conception shows a size comparison of the planets of the TRAPPIST-1 system, lined up in order of increasing distance from their host star (AFP Photo/R.Hurt/T.Pyle)/ Paris (AFP) - Seven Earth-like planets orbiting a small star in our Galaxy called Trappist-1, revealed Wednesday, are the most recent -- and arguably the most spectacular -- in a string of exoplanet discoveries going back 20 years. Herewith a backgrounder on the search for life beyond the horizon of our Solar System. The first exoplanet was detected in 1995, but ...
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