Largest Known Exoplanet Discovered: has the density of Balsa wood

Its only about 1400 light years away The planet itself has scientist perplexed as to an explanation as to it origin etc. Its twice the size of Jupiter

The largest planet ever discovered is also one of the strangest and theoretically should not even exist, scientists say.

Dubbed TrES-4, the planet is about 1.7 times the size of Jupiter and belongs to a small subclass of "puffy" planets that have extremely low densities. The finding will be detailed in an upcoming issue of Astrophysical Journal.

"Its mean density is only about 0.2 grams per cubic centimeter, or about the density of balsa wood,"
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