When the ship Carmen is on is hit and breaks in two, how come she and everyone else didn't immediately die from massive de-pressurisation? The air locks simply could not have kicked in in time. [Depressurization doesn't happen instantly. It takes time for the air to be evacuated from the exposed areas and the farther away from the section where the Rodger Young breaks apart, (remember that it is a BIG ship), the longer that section would have air. Also, the farther away from the damaged area the better the chance that the airlocks will come down in time to preserve some atmosphere.] Corrected by Guy Brigman

In the scene were everyone is running to gather around the captured brain bug one of the troopers left side pack (all the troopers have this pack attached to their left side) falls off - the trooper/extra doesn't notice it but another trooper/extra sees the pack and picks it up while running. All this takes place near the bottom left of your screen. [How could that possibly be considered trivia?] Corrected by MovieGuy

When making the drop onto Klendathu (Chapter 13), the drop ships being released from the Roger Young have their thrusters pointed DOWN, towards the bottom of the screen-When orbiting a planet in space, if you release something it simply stays with you, it will NOT fall. To separate from the Roger Young to begin the decent to Klendathu, the drop ships need to have their thrusters pointed to the upper left of the screen to SLOW the drop ships down and to push them AWAY from the Roger Young. The drop ships need to slow down, so they can decrease their orbital velocity which allow them to fall towards Klendathu. [The ships are in Klendathus' gravity well, which will pull the drop ships towards the planet.]

The sheet of paper that Johnny's comrades press against the water tank says that "Johnny Rico" was killed in action. An official federal document would supposedly not have a nickname like "Johnny" on it. [Rico's first name IS Johnny. It is what his parents chose to name him at birth, and so, it shows up like that on all records of him.] Corrected by Twotall

The large spaceships in this movie have warp capability but have no shields? This is entirely half witted as they would fly hundreds maybe thousands of light years to go fight yet not have any defense against even the most basic of weapons, like the artillery of the tanker bugs. I would think shields would be a number one priority up there with warp capability, as at those speeds the tiniest object would be a) unavoidable, and b) would seriously damage the ship. Secondly, why no weapons to fire on ground targets? The ships did have guns but nothing to take out something like a tanker bug. One would think that with ships that big you would want to take every opportunity to put any and every battle in your favor. [It's established that the Federation is the only human power of any consequence. Therefore, any military action would likely be against rebels with little but small arms, which the infantry could deal with. They had no real need to create battleships, since simple transports would suffice. They had no idea that the Arachnids could defend themselves from space (or the ground, for that matter) so well.]

If the Federation is so high-tech that they have mastered interstellar travel, then why don't they just destroy every single planet with a really big nuclear bomb? They could make about 200 for minimal cost and destroy pretty much every planet on the other side of the solar system - problem solved. It wouldn't cost lives, and I find it hard to believe that making a few missiles is going to be more expensive than massive starships, ammunition for the troopers and paying for all the logistical support e.g. food. [Where to start? Destroying entire planets would cause collateral damage (the loss of innocents, non-military targets) Destroying entire planets would disrupt gravitational fields. Destroying entire planets could not be done with surface nukes. The bombs would have to deep, deep underground. ]

Just before Carmen and Xander escape from the Rodger Young, some poor officers get blown into space. While they are escaping, Carmen hits one of the officers with the escape pod. It's absolute zero out in space (-273 C/-459 F), so the victims would have been instantly frozen, shouldn't the officer have been shattered into pieces? [It is NOT absolute zero in space. In fact, if they were close enough to a heat source their bodies would be fried, not frozen.]

The last thing Rico's parents say before the meteor strikes is, "Looks like rain," as the sky outside gets darker. As a large meteor (large enough to destroy a major city) makes it's appearance in the atmosphere, there would be a flash of light brighter than the sun. Several minutes later a dark dust cloud would rise, but by then everyone in the vicinity would be killed. [Is it not possible that a meteor on the right trajectory could block out the sun before entering the atmosphere and therefore cause the sky to darken.]

How do the "bugs" manage to invade the Earth? Supposedly they hurl meteors through space that land on Earth and cause massive destruction. But the bugs, even though they are huge and intelligent, have no technology. How could they harness the meteor, let alone make sure that it travelled through space accurately enough to hit the Earth? [There's no way of knowing if the bugs aimed the meteor at Earth, or even if the asteroid came from the bugs at all (and the federation just using it as an excuse to attack the bugs). And it is mentioned earlier in the film that the bugs send their spores through space on asteroids to create new hives. It could very well have been a completely random seeding asteroid that just happened to hit Earth, that was probably laucnhed hundreds of years before the Terran attack.] Corrected by Gary O'Reilly

Why the heck would a military force that can cross the galaxy rely on infantry soldiers with projectile weapons? Even in the 21st century, we have tanks that could have mopped up all of those bugs, not to mention a myriad of unmanned weapons that could keep grunts out of harm's way. [First, the bugs were extremely underestimated and thought of as completely stupid creatures. Second, later in the film the bugs do get cleared by air support while the infantry "mops up." But possibly the most influential reason is money. It could just simply cost much less to produce the weapons and armor used by the soldiers than to spend fortunes on research and development of newer products, especially if there was never a problem with the weaponry until the conflict with the bugs (and you cannot forget the millions, if not billions of soldiers ready to risk their lives for the mobile infantry). At the end of the film research on new weapons has occurred and has been released for the soldiers to use.]

In the scene when the asteroid hits Buenos Aires, the news shows footage of people in burning debris who are helped up. This can't be Buenos Aires, because an asteroid that's big enough to destroy a city would blow everything away in a ring of several kilometers. After the explosion all air in an ever bigger ring would be sucked to the center of the explosion, causing a vacuum and thereby killing all the people. There should be no survivors and fires. [Maybe the footage was of the outskirts of the city, where the damage may have been less severe, and there may have been some survivors. Buenos Aires is a very large city.]

When the bugs are attacking the outpost on Planet P, Diz is occupied for the majority of the fight with the task of calling in support. When the rescue ship is on route, she is one of the last to join in the firefight, but reports being totally out of ammo after depleting her first clip. Even Johnny has a spare to give her which negates the possibility of more time passing than is seen, either she only brought a single clip or totally forgot about those around her belt. [If she knew she was going to be on the radio and away from the fight, she may have given most of her ammo to other soldiers, who would need it more.]

Again, when the bugs attack the planet P outpost, the troopers are unable to hold off the seemingly relentless wave of bugs. Such to the point that the bugs are able to make their way to the outpost's upper level by climbing over one another, you see troopers frantically trying to repel them with standard machine fire, yet everyone seems to have forgotten about the underbarrel shotgun or similar projectile launcher that has already proven greater stopping power and in such close quarters surely it could have bought them some more time. [They could have very well have used them, that is why the corpses are building up; but we are seeing the tail end of the fight, when the soldiers would have exhausted all the more powerful weapons.]

During the scene when Carmen and Xander are on their "third watch" the "gravity field" is strong enough to move all the coffee but not the cup? [The coffee moves before the cup because the coffee is a less dense liquid, over the more dense solid cup. It's the same principle the moon has to cause Earth's tides.]

As it would take many years for an object to travel, even at the speed of light, to the other side of the galaxy and given that the Federation Fleet use warp drive to get to Klendethu, how were the Bugs able to shoot an asteroid out of their orbit to bomb Earth presumably a short time after? [There are no indication on when the asteroids were launched toward Earth: it might be years before and unrelated to the attack on Big K. And for all we know, both asteroids seen in the movie could be propaganda stunts: the first one destroying Buenos Aires being a simple rogue asteroid, giving the Federation an excuse to declare war on the Arachnids. The second one might be a video make up targetted to the population as a morale boast.]

In the scene where the infantry are mopping up after fleet has blasted the planet the troopers form a large ring around a group of bugs and concentrate all their fire on the centre. Would of thought this would result in quite a few troopers shooting each other? [I think I've read somewhere that the Troopers are equipped with weapons and body armors fitted with electronic devices to prevent friendly fire. Take the live-ammo training scene where one of the trainee gets yelled at by another one because he got in his line of sight, causing his weapon to beep or something. A few seconds later, the same trainee is shot in the head AFTER Rico removed his helmet to fix it. Of course, the later scene where Ratshack snipes a soldier snatched by a flying bug (and later when Rico finishes off the crippled Ratshack) would probably indicate the function can be disabled.]

When Carmen and Xander man the emergency evasive system to take the Roger Young out of the bug asteroid's path, why did they have to count down from five before punching the system button? If they had just punched it straight away, the ship would have cleared the asteroid safely without getting its communications tower blown off. [Carmen was using that time to point the ship downward. Only at the slower speed did she have time to maneuver; if they had punched it early, she would not have been able to dive in time. Xander was guiding her as the experienced member of the team by estimating the time they had left.]

Rico uses a grenade to kill the tanker bug at one stage, seemingly part of his normal equipment. But at the final battle when hundreds of bugs are massed at the walls of the compound, making a perfect target, no-one thinks to use one. [They probably ran out of grenades.]

Just before the bug asteroid hits the Roger Young, Carmen and the other pilot are rapidly examining their instruments to determine where the gravity field is coming from. Yet, moments later, we see that the asteroid is coming from straight ahead of the ship and is fully visible through the front windows of the bridge. Couldn't one of the pilots have seen it coming? [Surely both the cruiser and the asteroid are travelling at immense speeds, seeing as they are moving across huge interplanetary distances. This means that the asteroid would be upon them in no time at all without them observing it quickly enough.] Corrected by Jez

In the scene where they find a body with its brains removed, the original lieutenant sticks the fingers of his robotic hand into the hole in the head and says: They sucked his brains out. Obviously the giant Brain Bug did this, but the only way in that room was through a door probably only 6.5 feet tall and a short hallway of the same size. The brain bug was 15 to 20 feet tall. How did it get in there? Did they take the live person outside, suck out his brain, drag him back inside and sit him in his chair? I don't think so. [There was a hole burrowed into the room which you see and they even mentioned "That must be how they got in..." and which they bombed to close the hole up later on.]