Introduction
Who gave the concept of gravitational force…
a) Issac Newton
b) Gallelio
c) Micheal Faraday
d) Einstein
Our Milky Way galaxy is a disk-shaped collection of…………
a) gas
b) dust
c) billions of stars
d) all of these
Earth is near the edge of the disk of the galaxy, about…………from its central bulge.
a) 26,000 light year
b) 260,000 km
c) 12,000 light year
d) 120,000 mile
Explanation: 2.5 × 1020 m
The force that binds together these progressively larger structures, from moon all the way to galaxy clusters is known as the……
a) galaxy force
b) Newton’s force
c) gravitational force
d) all of these
Law of Universal Gravitation:
