Free Republic

Explanation: Stars remain where they are. Nebulas appear the same. Day after day. Year after year. Given the vast distances in astronomy, even fast moving objects will not appear to change their appearance in a human lifetime. Typically. A recent spectacular exception to this, however, is the supersonic jet in the star forming Herbig Haro 47. HH 47 is so close -- and the jets are moving so fast -- that images from the Hubble Space Telescope from 1994 to 2008 have been combined into a time-lapse movie that actually shows a powerful jet expanding. Visible above, jets of plasma...

The HH-47, the Air Force's choice for a new CSAR helicopter to replace the aging HH-60, has hit an obstacle that could lead to its untimely demise – the fury of a politician. Specifically, the fury of Senator John McCain, whose crusade against the KC-767 has delayed the process of replacing the Air Force's aging KC-135E tankers for over six years. This is a controversy that will delay the entry of a badly needed combat search-and-rescue helicopter – unless McCain succeeds in killing it. Worse, McCain's crusade ignores the fact that the HH-47 not only outclasses the present system in...