The video explores the Big Bang, the event that marked the birth of our universe, and its ongoing expansion. It explains the concept of singularity, where gravity is infinite, and how the universe expanded from this state. The video discusses Hubble's discovery of galaxies moving away, indicating the universe's expansion. It covers the early universe's conditions, including Planck time and the formation of atoms. The video also explains how scientists observe the universe's past using telescopes and the challenges in seeing the Big Bang's start due to the absence of light. The episode concludes with a teaser for the next part, which will theorize what happened before the Big Bang.

What event is considered the birth of our universe?

• The Big Bang

• The Universal Singularity

• The Great Expansion

• The Cosmic Inflation

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NGSS.HS-ESS1-2

What is a singularity?

• A point with no mass

• A region where the laws of physics do not apply

• A point where gravity is zero

• A place with infinite temperature

What happens to space and time in a singularity?

• They remain unchanged

• They expand infinitely

• They bend and distort

• They disappear

How long ago did the Big Bang occur?

• 10.8 billion years ago

• 12.8 billion years ago

• 13.8 billion years ago

• 15.8 billion years ago

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NGSS.HS-ESS1-2

What was the temperature of the universe at Planck time?

• 100 billion degrees

• 100 million degrees

• 100 trillion degrees

• 100 million trillion trillion degrees

What formed 700,000 years after the Big Bang?

• Protons

• Neutrons

• Atoms

• Molecules

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NGSS.HS-ESS1-2

How do scientists study the origins of the universe?

• By analyzing the color of galaxies

• By measuring the temperature of planets

• By studying the ripples in space

• By observing the current state of stars

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NGSS.HS-ESS1-2

What tool allows us to see ancient light from the beginning of the universe?

• Radio telescope

• Optical telescope

• Infrared telescope

• Microwave telescope

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NGSS.HS-ESS1-2

Why can't we see the exact start of the Big Bang?

• Because there was no light

• Because it was hidden by dust clouds

• Because it was too far away

• Because it was too bright

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NGSS.HS-ESS1-2

What is the main challenge in understanding what happened before the Big Bang?

• Concept of nothingness

• Infinite density

• Lack of scientific tools

• Absence of light

Tags

NGSS.HS-ESS1-2