Consider an Object in Orbit Around a Star

Multiple Choice

Consider an object in orbit around a star. The star suddenly shrinks in size, but does not change its mass. What happens to the object's orbit?

A) It is instantly ejected from its orbit.
B) It gradually spirals into the star.
C) It remains in the same orbit.
D) It settles into a smaller orbit, with similar distance from the surface as the original orbit.