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Correct!
Powerful telescopes orbiting Earth have seen evidence of the Big Bang. These waves of radiation from the explosion are called the cosmic microwave background.
When: about 13 billion years ago
What: explosion that began the Universe
Temperature: trillions of degrees
Source: a tiny point of energy, smaller than the period here.
Result: observable Universe formed
Significance: only explanation of the beginning of time supported by scientific evidence
What kind of powerful instruments have scientists used to find evidence that the Big Bang really happened?
What force caused matter to form into galaxies, planets, and stars?
gravity
super glue
solar winds
Correct!
Over billions of years, gravity pulled gas, dust, and other stuff together to form all the objects in the Universe today.
Scientists believe that the Universe is still expanding.
Fact
OR
Fiction
?
Fact
In the 1920s, Edwin Hubble used powerful telescopes to discover that the Universe has been expanding in all directions ever since the Big Bang.
“
Of all of the creation stories ever told, the only one with strong scientific proof is the Big Bang.
„
Charles Liu, astrophysicist