NASA finds 7-planet system with all earth-like planets

By TasteTheRainbow, in X-Wing Off-Topic

20 hours ago, TasteTheRainbow said:

These small stars basically last forever without changing. So if life ever existed there it probably still does. Suns like ours burn hot and fast by comparison, with huge swings in output.

If the star is at the low end of age estimates - half a billion years old:

https://en.wikipedia.org/wiki/TRAPPIST-1

then life may not have had enough time to evolve very far.

Good point. There's so many of these that are very old I just assumed it was old.

I did a bit of estimating - and while there might be moments where one planet appears in the sky of another planet, bigger than our Moon does, it may not be by a lot.

B and C are both close and large - so that would be the best example. B could come to within about 0.004 AU of C, but this is still some 600000 km - quite a bit further than the moon is. 1.5 x the moon's distance at its farthest, let's say roughly Earth-sized (4x diameter of moon), so it would be some 2.6 x the size the moon appears when the moon is farthest away.

"Several times the size of our moon" seems to be between 2 and 3 times. And that's likely to be as high as it gets.

Edited by Ironlord
21 hours ago, Marinealver said:

Well if you want to be a smart season 2 was the comics. The movie was season 3.:P

(although it would be nice if there was a telltale game that could be mixed in somewhere between season 1 and the movie). Heck make the movie Season 4. Put it in between the tv series and the movie.

There was a comic? I had no idea...

FTL is really not necessary for a 40 light year journey. Yes, it's still an extraordinary distance that boggles any mind capable of understanding what a light year is, but with this sort of thing, you can't be greedy. Some kind of hibernation is needed, but even one tenth the speed of light puts you at a 400 year journey, which is still something in the realm of human possibility, given proper institutions.

Certainly, one tenth lightspeed is still way faster than we're currently capable of, but it doesn't require incredible super-physics belreakthroughs that, say 90% of lightspeed does.

It would be crazy if we set up some sort of hibernation ship full of smart, bright people and sent them off to sleep for 400 years. Then, we develop faster technology and get there before they do. They arrive and wake up....only to find all the work already done. They would become like living museum pieces.