(aka 'The Day After Tomorrow') The five person crew of the 'Alteres', propelled to near light-speed by a 'photon drive', head to Alpha Centauri in the search for possible worlds to colonise. The show was commissioned to 'teach science' to kids via entertainment and the characters spend a lot of time explaining concepts such as relativistic time-dilation, Doppler shifts, black holes, star deaths, and super-nova (but oddly, the ship accelerates at a rate that would have quickly killed everyone on board). In keeping with the target audience and didactic intent, the crew includes a pair of youngsters (Katharine Levy and Martin Lev) as well as Nick Tate (familiar to 'Space 1999' fans as Alan Carter), Joanna Dunham, and the great Brian Blessed (uncharacteristically (and disappointingly) low-key). The show was created by Gerry Anderson and produced between seasons 1 and 2 of 'Space 1999', so not surprisingly the two shows share some miniatures and props. Although more interesting historically than as entertainment and a bit derivative (the final climatic black hole scene seems to be a bargain-basement knock-off of the famous Star-gate slit-screen sequence in '2001 A Space Odyssey' (1968), the show is watchable, albeit mostly for the imagery (the final images are surreal) and model work. All in all, a must-see for fans of British sci-fi TV and/or Gerry Anderson. This obscure made-for-TV film can be found, along with other Anderson curios, on the 'The Lost Worlds of Gerry Anderson' DVD.