R
robnissen
Guest
Is the 74,000 mph speed listed below in an SDC article correct? It was my understanding that the fastest speed of any ship was New Horizons which is just under 50K mph AFTER a gravity assist from Jupiter. Has propulsion technology improved that much in the last few years, that we can now reach almost 75K MPH WITHOUT any gravity assist??<br /><br /><font color="yellow">Phoenix blasted off Earth aboard a Delta 2 rocket on Aug. 4 and now careens through space at 74,200 mph (33,180 meters per second)-a speed necessary to cover the 422 millions miles (679 million kilometers) between Earth and Mars by May 25, 2008.</font><br /><br />