rings – n. a round band
manually – adv. operated or controlled with the hands or by a person
intentionally – adv. done on purpose
contamination – n. making something dangerous, dirty, or impure by adding something harmful or undesirable to it
probe – n. a device that is used to obtain information from outer space and send it back to Earth
friction – n. the force that causes a moving object to slow down when it is touching another object
data – n. facts or information used usually to calculate, analyze, or plan something
blaze – v. to move very quickly
curiosity – n. the desire to learn or know more about something or someone
microbial – adj. so small it can only be seen with a microscope