At the start of the film, Voyager's parabolic dish antenna faces Earth, to transmit and receive data. At the end of the film, as Voyager is nearing the edge of the galaxy, the dish is facing away from Earth, making communication with it impossible.
When Brandy is hit with the orange in the cafeteria, she lifts her left arm up and onto the left side of her neck. When the shot changes to her back, she is holding her right rib cage with her left arm under her right armpit. When the shot goes back to her front, her hand is back on her neck.
Guild Wars does not have a monthly subscription fee, so Tim's dad couldn't cancel anything by calling his credit card company.
18 minutes into the film, the narrator says, "On September 27th, 2013, after 36 years of space travel, the Voyager finally exited our solar system and entered uncharted territories." In reality, on September 12 of that year, NASA confirmed that Voyager I had left the heliosphere but that this had actually occurred on August 25, 2012. The narrator then goes on to say, "But not before taking this photo of Earth from 3.7 billion miles away." While strictly speaking this is true, the "Pale Blue Dot" photograph was taken on February 14, 1990 - over 23 years before the narration implies that it was, and shortly after which the Voyager's cameras were permanently deactivated to conserve electrical power for the remaining scientific instruments on board.
In giving the 9/11 assignment the teacher says that "Other than the attack on Pearl Harbor it's the only time a foreign force attacked anything on U.S. Soil." That is incorrect. Even if you do not include the Revolutionary War you still have the War of 1812 where the U.S. was invaded by the British and the White House and Washington D.C. was burned.
The line of dialogue in the movie is presented as it was in the book - when the teacher gave the assignment on the attacks of 9/11, he claimed it was the first time a foreign force had attacked the United States, but in fact during the War of 1812 the U.S. was invaded by and Washington D.C. burned by the British. Additionally, although a territory and not a state at the time, Hawaii was a part of the U.S. when the Japanese attacked Pearl Harbor in 1941.