inside surface of the plasma membrane to form a membrane-enclosed bubble, or vesicle, containing the ingested material. There are two main types of endocytosis that are distinguished by the size of the vesicle formed and the cellular machinery involved. Pinocytosis (cell drinking) describes the internalization of extracellular fluid and small macromolecules by means of small vesicles.
junket (plural junkets) (obsolete) A basket. A type of cream cheese, originally made in a rush basket; later, a food made of sweetened curds or rennet.
Orbital debris, or âspace junk,â is any man-made object in orbit around the Earth that no longer serves a useful purpose. Space junk can be bad news for an orbiting satellite.o minimize the risk of collision between spacecraft and space junk, the U.S. Space Surveillance Network tracks all debris larger than 10 centimeters. These images represent all man-made objects, both functioning and useful objects and debris, currently being tracked.