Milky Way's Black Hole

The video explains the presence of a supermassive black hole at the center of our galaxy, the Milky Way. It describes how black holes form from collapsing stars and how their immense gravity prevents even light from escaping. Using the Keck telescope, astronomer Andrea Ghez observes stars near the galactic center, revealing their rapid orbits around a massive, unseen object. This evidence supports the existence of a supermassive black hole, Sagittarius A*, located 26,000 light years from Earth. Despite its presence, the black hole remains dormant, with the Milky Way's stars not being drawn towards it unless they cross its path.

What happens to massive stars that leads to the formation of black holes?

• They explode into supernovae.

• They split into smaller stars.

• They expand and cool down.

• They collapse into a single point.

Which telescope is used by Andrea Gez to study the center of the Milky Way?

• Hubble Space Telescope

• Keck Telescope

• James Webb Space Telescope

• Chandra X-ray Observatory

What evidence suggests the presence of a super massive black hole at the center of our Galaxy?

• The color of the stars

• The temperature of the stars

• The brightness of the stars

• The speed of stars orbiting a central mass

What is the name of the super massive black hole at the center of the Milky Way?

• Cygnus X-1

• Sagittarius A*

• Orion B

• Andromeda A*

How far is Sagittarius A* from Earth?

• 10,000 light years

• 100,000 light years

• 26,000 light years

• 50,000 light years