How cool is that, the discovery of, not one, but seven new worlds around a dwarf star that is just 30 light-years away, and one or more of those planets could have Earth like conditions. When NASA made the announcement back on February 22, 2017 I did a search on-line once I got home to browse their website for all the information I could get. This was great news, a star with possible Earth like worlds, only 30 light-years away–wow. But I was so busy with work, and home projects that just now, that only this weekend I have been able to sit down and do some serious reading about the Trappist-1 system. I am blown away with all the data I see about this star system.
A few cool things about the Trappist-1 system is that the star is an “ultra cool dwarf star,” which sounds weird and unappealing, but even with such a small star, the planets are close enough to it that they may sit in “inhabitable zone” for life as we know it to exist on. The dwarf star will out last our Sun, in terms of life expectancy becuase Dwarfs Stars burn their fuel more slowly. And something that I found really interesting, becuase the planets are really close to each other, all seven planets’ orbits would fit inside Mercury’s if compared to our Solar system, so you would be able to see the other planets really well if you stood on any one them. They would appear very large in the sky from your vantage point because of the small distance from one another.
On the down-side, becuase of the planets’ size and close proximity to the star and one another, all seven planets maybe “tidal locked” which means they would all have one side permanently facing the star. Read the Wikipedia page for more information.
The astronomers who made the discoveries, never actually seen the planets themselves becuase they are just to far away. They used the dimming effect of the objects passing in front of the star to spot them. So the images of the seven planets are artist’s who just guest at what these worlds would look like. Though, it helps to sparks the imagination.
Please visit the NASA webpage about the Trappist-1 System.