Why do we see objects in the past when we look at them?
Shells of Cosmic Time (ft. @AstroKatie)

Interactive Video
•
Physics, Science
•
11th Grade - University
•
Hard
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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Because light takes time to travel from the object to us.
Because our eyes have a delay in processing images.
Because the universe is expanding.
Because objects emit light at different speeds.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How long ago do we see the sun when we look at it?
13 billion years ago
2.5 million years ago
8 minutes ago
4.4 years ago
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What can powerful telescopes reveal about the universe?
They can show us the future of the universe.
They can reveal galaxies from over 13 billion years ago.
They can detect sound waves from distant stars.
They can measure the temperature of the universe.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the cosmic microwave background?
The light from the sun that reaches Earth.
The light from the early universe after the Big Bang.
The heat emitted by stars in the galaxy.
The sound of the universe expanding.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What marks the most distant layer of time we can observe?
The birth of the sun.
The formation of the first stars.
The cooling of the primordial fire.
The creation of the Milky Way.
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