| A | B |
|---|
| Mars | The Red Planet |
| Craniophagus | union of conjoined twins by there heads. |
| Ganymede | Jupiter's Largest Moon |
| comet | a rocky icy object orbiting the sun; Smaller than a planlet |
| red giant | a star that has low surface temperature and a diameter that is large relative to the sun |
| light year | the distance traveled by light in a year |
| Thoracopagus | the most common form of conjoined twins |
| protocol | plan/ set of rules to be followed during an emergency |
| galaxy | big system of stars that interact with eachother |
| moon | satellite that orbits a planet |
| incubation | the time it takes for an infectious agent to establish itself in the victims body |
