In the "Previously on Stargate" montage in the beginning, the DVD caption attributes Selmak's expository dialogue to Bra'tac.
When Vala beams the alliance member off the ship and into space, he fires his pistol several times. Pistols fire due to a firing pin hitting a blasting cap at the base of a round, causing an explosion. Without oxygen this explosion would never happen and the pistol would not fire.
This is not true. According to Luis Villazon writing for Science Focus Magazine, "Bullets carry their own oxidising agent in the explosive of the cartridge (which is sealed, anyway) so there's no need for atmospheric oxygen to ignite the propellant."
This is not true. According to Luis Villazon writing for Science Focus Magazine, "Bullets carry their own oxidising agent in the explosive of the cartridge (which is sealed, anyway) so there's no need for atmospheric oxygen to ignite the propellant."
When Vala fixes the hyperdrive, Sam talks to Daniel via comms, but she never touches the device to activate it, she just hovers her finger next to it.