The NASA site lists PSR 1257 as the first extrasolar planet to be discovered, in 1991. So while thousands of years of naked-eye observation followed by hundreds of years of peering through telescopes never even got us to double digits, a little over a decade and a half has us more than a quarter of the way to quadruple digits. And it's no understatement to say that we're barely scratching the surface.
Thursday, December 06, 2007
I Remember When There Were Nine