Author Question: The Oort Cloud is believed to have been formed by: A) planetesimals that were flung far from the ... (Read 105 times)

Shelles · **on:** Jul 27, 2018

The Oort Cloud is believed to have been formed by:

A) planetesimals that were flung far from the Sun in gravitational encounters with the jovian planets.
B) icy bodies formed between stars that have been captured by our solar system's gravity.
C) moons that escaped from the jovian planets.
D) debris from an icy planet that broke apart early in the solar system's history.
E) debris from impacts of planetesimals, asteroids and comets with the jovian planets.

Question 2

A neutron star is

A) the remains of a star that died by expelling its outer layers in a planetary nebula.
B) a star made mostly of elements with high atomic mass numbers, so that they have lots of neutrons.
C) the remains of a star that died in a massive star supernova (if no black hole was created).
D) an object that will ultimately become a black hole.