Movie attempts to address sibling rivalry: Despite how the two brothers are constantly at each other's throats, they learn they should treat each other much better and look out for each other.

Spaceships are armed with guns and futuristic missiles; lizardish space aliens are menacing; crazed robot attacks boys; meteors and space weapons blow up the boys' house/spaceship. Frequent explosions, peril. Three siblings are constantly fighting -- a teen sister punches her younger brother in the face; two brothers are constantly chasing each other, tackling each other, calling each other names.

Teenaged sister wears a tight top in preparation for her night out; she develops a crush on a character who turns out to be her younger brother at a later age and remarks, "And I wanted to ... " when she discovers the truth.

Minor language, including kids' use of "d---k," "screwed," "ass," and "bee-yatch." An astronaut makes reference to passing through a "time sphincter." A teen girl develops a crush on an older astronaut; when it's revealed that the astronaut comes from the future and is her younger brother, she remarks, "And I wanted to ... " without articulating the clear sexual insinuation.

Not applicable

Not applicable