A type of gay dinosaur that was scared to fight any other dinosaurs, growled in a lispy way, was excessively fat and/or skinny in all the wrong places, was so dark only its teeth could be seen at night, was incapable of reproduction, as the only pussy he ever got was from another male's sphincter and it's momma during child birth. Died out after one generation.

The safeguarding of Earth and other worlds from biological cross-contamination (i.e. billionaires with too much time on their hands).

Also known as “planetary protection.” Planetary protection / quarantine “reflects both the unknown nature of the space environment and the desire of the scientific community to preserve the pristine nature of celestial bodies until they can be studied in detail.”

There are two types of interplanetary contamination. Forward contamination is the transfer of viable organisms from Earth to another celestial body. Back contamination is the transfer of extraterrestrial organisms, if such exist, back to the Earth's biosphere.