Today I Learned…

…that there is now confirmed evidence that a liquid lake exists on Titan, the most famous of Saturn’s moons.  The lake is not made of water — it is most likely filled with hydrocarbons — but it is still the first confirmed extraterrestrial body of liquid we have found.

Titan is the second-largest moon in the Solar System, behind only Jupiter’s Ganymede.  It is larger than Mercury, and has a thick atmosphere also composed of mostly hydrocarbons.  Check out more good facts about Titan in the original article from Scientific American.

Today I Learned…

…that there’s this giant comet called 17P/Holmes in the solar system that’s bigger than the Sun. The dust atmosphere of the comet measured at 1.4m km last October. All that dust erupted from the comet last October from a ice-rock core only 3.6 km in diameter, and it is now half a million times brighter than it was before.

Read more here.

EDIT: That link now points to the correct page, despite the previous image linked to being funny. Thanks to Ted.