Question

what are the two types of variable stars? a) wavelight and particle b) illuminated and dark c) extrinsic and intrinsic d) circular and spherical question 9 (5 points) whats the role of the suns gravity in the solar system? a) prevents the sun from falling into a black hole b) slowly pulls the planets toward the sun c) keeps the planets orbiting around the sun

Explanation:

Variable stars are classified into extrinsic (changes due to external factors like eclipses) and intrinsic (changes due to internal processes like pulsation). The sun's gravity provides the centripetal - force that keeps the planets in their orbits around it.

Answer:

1. C. Extrinsic and intrinsic
2. C. Keeps the planets orbiting around the sun