A sex position. When you hang on the ceiling fan for a few seconds staring down at your lover, then quickly let go and mount up on top, all the while flapping your arms wildly.

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.

He who swoops down from apon high or yonder multi story dove box to issue orders of the relaying nature