When I was in secondary school, the first few pages of my geography book proclaimed our place in the universe. Earth was the third planet from the sun. One of nine planets in orbit around it. That was it, nine planets. Sure, there was a lot of talk about planets around other stars and Star Trek’s starship Enterprise would pay a visit to some of them every week. But in the real world we knew of nine.
In a previous post, I discussed Pluto and the existence of planets in orbit around other stars (exoplanets). Since then, NASA has announced and held a press conference on Wednesday announcing further discoveries in this field. In the conference, NASA provided details of an exoplanet system located around a relatively close star. The star, Trappist-1 is an ultra cool red dwarf, much smaller than our Sun and located 39 light years from Earth. The star plays host to a remarkable planetary system.