Definitions by Some weird nerd guy

Reaction control system 

Small rockets mounted on the sides of a rocket in many orientations; allows for fine maneuvering in space, especially useful for docking. Usually abbreviated RCS.

Let's shut down the main engine and complete the rendezvous with the reaction control system.

Reaction control system by Some weird nerd guy March 27, 2017

New Horizons 

A deep space probe, launched in January of 2006, sent to research Pluto, Charon, and other trans-neptunian objects. (TNOs) Reached Pluto in summer of 2016.

Have you seen the new pictures from New Horizons yet?

New Horizons by Some weird nerd guy March 27, 2017