What will we find in the way of planets similar to Earth as we keep expanding our ability to see into the universe?
No one is sure but a team of MIT, NASA, and Carnegie scientists wants to come up with the possibilities. So far they have created models for 14 different types of solid planets that might exist in our galaxy.
The 14 types have various compositions, and the team calculated how large each planet would be for a given mass. Some are pure water ice, carbon, iron, silicate, carbon monoxide, and silicon carbide; others are mixtures of these various compounds.
Yes, you can get paid to imagine new planets. Credit: NASA JPL