A) Nuclear bonding
B) all the answers
C) electromagnetism
D) Gravity
E) Nuclear fusion

A) by viewing black holes with powerful telescopes
B) All of these answers
C) by running experiments on the Sun
D) by observing objects and light around black holes

A) when nuclear bombs explode
B) when asteroids hit stars
C) when giant stars explode
D) when comes strike planets

A) Inside gas giant planets
B) at the center of galaxies
C) at the center of the solar system
D) In the center of a planet

A) True
B) False

A) Supernova border
B) pulsar
C) Event horizon
D) singularity

A) Iris
B) Supernova
C) Pulsar
D) singularity

A) iris
B) pulsar
C) singularity
D) supernova

A) True
B) False

A) it's small size and large mass
B) It's large size and small mass
C) It spins at a rate faster than light
D) Nuclear reactions at its core