What is the fastest man made airplane/jet in the world?

compared to nature made?

X-15

Wait, I'd kind of like to see a jet or airplane that isn't man made

The SR-71 Blackbird will get you there in about 4 hours. http://en.wikipedia.org/wiki/SR-71_Blackbird The Concorde is much slower.

Lockheed SR-71

if you're using flight simulator 2002 or 2004, use any plane and use the slew function or go to the map view and for airspeed type as many 9s as you can.-I tried that and my plane shot straight up. My favourite download site is http://www.fsplanet.com/

The Mig 25....the SR-71 blackbird and the 60 era X-15 no longer fly the MIG 25 are still flown by some countries....also I believe the X30 is it's number but it's called a SCRAMJET I believe in the last few years it has reached MACH 6 or 7

That we know of, the SR-71; but not the X-15, since for a long time it was not considered a plane. On theother hand, all airplanes are man-made!

If fuel isn't an issue and you don't want to go military, then take Concorde.