Earlier this month, some humans announced that they'd done the math: and collisions like the one involving Earth a few billion years back can end with two Earth-size planets, orbiting each other.
The Lemming found a pretty good writeup about their research, complete with an "artist's concept" that probably isn't all that inaccurate. It's certainly a cool picture:
- "Binary Earth-Size Planets Possible Around Distant Stars"
Charles Q. Choi, Space.com (November 21, 2014)
How many double planets there are, what fraction are roughly Earth-size, and how many of those have the qualities that makes Earth comfortable for humans — that's something that the Lemming is confident humans will figure out. Given time.
About this post's picture? It's strictly fictional. Not a photo. Definitely not: and the Lemming's sticking with that story.
More from the Lemming:
- "From the Mind of the Lemming: Mr. Chuckles"
(November 7, 2014)
- "From the Mind of the Lemming: Night Flight"
(September 26, 2014)
- "From the Mind of the Lemming: Morning in the City"
(August 29, 2014)
- "Robots With Attitude: Maybe, Eventually"
(August 15, 2014)
- "Tryouts at the Consulate: Hamlet"
(June 27, 2014)