Xandu writes: "A documentary film about the BLAST balloon-borne telescope is about to premiere at the Toronto Hot Docs film festival. BLAST is a submillimeter telescope that floats on a balloon 37km in the air while observing the earliest star-formation and earliest galaxies. It's two science flights have been covered on Slashdot, the first from Kiruna, Sweden and the second from McMurdo Station, Antarctica. Virtually all the software used on BLAST is open source, and the kst display program has been discussed here as well. If you live in or near Toronto, it's showing twice, Tuesday evening and Saturday afternoon. The film contrasts the science with the human element and hardships endured while working in such exotic locations. Naturally, the movie trailer is online."