Mass of the Milky Way Galaxy

At what speed does the sun travel around the Milky Way's center?

• 100,000 mph

• 250,000 mph

• 515,000 mph

• 750,000 mph

What did the Milky Way begin as?

• Solid rock

• Great clouds of dust and gas

• Ice and water

• Molten lava

What caused the elements in the Milky Way to start collapsing?

• Magnetic fields

• Gravitational pull

• Solar winds

• Cosmic rays

What is the value of the galactic year used in the final equation?

What is at the very center of the Milky Way?

• A massive black hole called Sagittarius A

• A giant star cluster

• A dense cloud of gas

• A supernova remnant

What is the bulk of the mass filling the Milky Way made up of?

• Stars

• Planets

• Dark matter

• Gas

What is the term for orbital motion that follows Kepler's laws?

• Circular motion

• Linear motion

• Keplerian motion

• Random motion

What is the center of our galaxy compared to in our solar system?

• Earth

• Moon

• Sun

• Mars

What is the common center of mass for binary systems?

• The larger star

• The smaller star

• A point between the two stars

• The center of the galaxy

What is the galactic corona?

• A high-density region of stars

• A low-density and low-luminosity spherical distribution of matter

• A bright ring of light around the galaxy

• A cluster of black holes