equivalent to spooked. frightened by something that is creepy.

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.

to creep in the past tense.

Not actually creeping up (ie) behind someone, but could also be depending on the given situation.

To know enough about a person that you don't actually know (ie where this person works). Creeping would consist of using that small bit of knowledge you have about said person and going on the popular website called facebook and attempting to look them up.

adj. - to be sexually pursued by a creeper (usually an older perverted man); seduced by a creeper.

what you do on Facebook when you're bored or just curious.

Noun; a mixture of 'creep' and 'pedo', used to describe stalkers, people who you catch staring at you, and males with pedo-staches. Frequently confused with the the past tense verb, creeped.