C. d. Alpha particles are less dense than gold atoms.
33. The majority of an atom's mass is from the particles
a. within the nucleus of an atom.
b. within the neutron of an atom.
c. that surround the proton of an atom.
d. that surround the nucleus of an atom

i believe the answer is a hope it and is correct

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.