Means when something is sketchy or ghetto or nasty.

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.

another way to say getto. this what they say at my school when something is crapy or recked up. basicly any situation were you would say somthing is getto! except for "look a ghetto." But you could say look at that hagerd neighborhood. I don't think I spelled this word right I've only heard it I've never seen it written. sorry. It's said like hag-gerr-ed the gerr like the animal noise.