It’s not surprising that astronomers are discovering new planets almost every day. Almost all of them are the same boring type as our old Earth — wisps of gas and dust orbiting around a star that, under the influence of their mutual gravitation, gradually accrete into planet-sized bodies. But last year, Yale researchers found out that a big planet, twice the size of Earth, is apparently the core left when a great supernova blew most of its gases way.
The remaining core was carbon. Under the influence of ts own brutal gravity it crystallized its entire mass, And what is floating around out there — fortunately for the De Beers company, too far away for anybody to even think of mining it — is a gigantic diamond, the size of the planet Jupiter.
If there is a race of super-huge, super-intelligent aliens out there, what an engagement ring for their emperor to give his fiancee.