The video explores the vastness and complexity of galaxies, starting with the Milky Way and expanding to the discovery of billions of galaxies by Edwin Hubble. It delves into the structure, formation, and evolution of galaxies, highlighting the roles of black holes and dark matter. The video also discusses galactic collisions, particularly the future collision between the Milky Way and Andromeda. Finally, it explores the possibility of alien life, examining various theories and the implications of potential contact.

What is the name of the galaxy we inhabit?

• Andromeda

• The Milky Way

• Sombrero Galaxy

• Whirlpool Galaxy

Who discovered that the universe contains multiple galaxies?

• Isaac Newton

• Albert Einstein

• Edwin Hubble

• Galileo Galilei

Which galaxy is characterized by two enormous spiral arms?

• Whirlpool Galaxy

• Andromeda

• Sombrero Galaxy

• Milky Way

What is the largest galaxy ever found?

• IC 1011

• M87

• Andromeda

• Milky Way

What is essential for the formation of stars and galaxies?

• Dark Energy

• Radiation

• Gravity

• Magnetism

Tags

NGSS.HS-PS2-4

What lies at the center of most galaxies?

• A quasar

• A nebula

• A supermassive black hole

• A star cluster

What mysterious substance is believed to hold galaxies together?

• Neutrinos

• Antimatter

• Dark Matter

• Dark Energy

What will eventually cause galaxies to drift apart?

• Black Holes

• Supernovae

• Dark Energy

• Dark Matter

What is the Fermi Paradox?

• The idea that aliens have visited Earth

• The theory that life exists elsewhere in the universe

• The question of why we haven't detected intelligent life

• The concept that our reality is a simulation

According to the Drake equation, what is the probability of intelligent life existing elsewhere in the universe?

• Moderate

• Low

• High

• Unknown