Exploring the Universe: From Earth to the Cosmic Web

What was the historical belief about Earth's position in the universe?

• Earth is at the center of the universe.

• Earth is on the edge of the universe.

• Earth is a part of a binary star system.

• Earth is the largest planet in the universe.

How many galaxies are estimated to be in the observable universe?

• 10,000

• 100,000

• 1 million

• A quadrillion

What significant discovery did Edwin Hubble make at the Mt. Wilson Observatory?

• The existence of black holes.

• The presence of dark matter.

• The formation of stars.

• The universe exists beyond the Milky Way.

What did Vesto Slipher's observations suggest about some nebulae?

• They were composed of dark matter.

• They were part of the Milky Way.

• They were moving towards Earth.

• They were moving away from the Milky Way.

What are Cepheid variables used for in astronomy?

• To measure the temperature of stars.

• To determine the age of galaxies.

• To calculate distances to galaxies.

• To identify the chemical composition of stars.

What is the significance of the Andromeda Galaxy's distance measurement?

• It proved the universe is static.

• It revealed the presence of dark energy.

• It showed Andromeda is outside the Milky Way.

• It confirmed the existence of black holes.

What did Hubble's observations reveal about the movement of galaxies?

• Galaxies are moving away from the Milky Way.

• Galaxies are orbiting the Milky Way.

• Galaxies are moving towards the Milky Way.

• Galaxies are stationary.

What did Hubble's discovery about galaxy movement lead to?

• The concept of parallel universes.

• The Big Bang theory.

• The discovery of dark matter.

• The theory of relativity.

What is the cosmic web?

• A network of black holes.

• A structure of galaxies and dark matter.

• A series of interconnected stars.

• A collection of solar systems.

What role do modern observatories play in our understanding of the universe?

• They only study the Milky Way.

• They focus solely on our solar system.

• They map the cosmic web and study distant objects.

• They confirm the universe is shrinking.