3. Which phrase defines the limits of what science can study?

A. any phenomenon that a scientist can observe
or model

B. only a phenomenon that a scientist can
observe with instruments

C. only a phenomenon that a scientist can
observe without instruments

D. only a phenomenon that a scientist will be
able to explain with certainty

the aurora is formed when charged particles emitted from the sun during a solar flare penetrate the earth's magnetic shield and collide with atoms and molecules in our atmosphere. these collisions result in countless little bursts of light, called photons, which make up the aurora.

auroras are generated by charged solar particles hitting molecules in earth's atmosphere. this usually happens in high latitudes, because our planet’s magnetic field tends to funnel these particles toward the poles. that’s why it can be experienced in northern ohio.