Big Bang

Front

What is the Big Bang Theory?

Back

The Big Bang Theory is the leading explanation for how the universe began, proposing that it started from a singular point and has been expanding ever since.

Front

How old do scientists believe the universe is?

Back

Scientists estimate the universe is approximately 13.8 billion years old.

Front

What are the original two elements formed in the universe?

Back

The original two elements in the universe are Hydrogen and Helium.

Front

What evidence supports the Big Bang Theory?

Back

Evidence includes the abundance of Hydrogen and Helium, the Cosmic Microwave Background Radiation (CMBR), and the observation that the universe is expanding.

Front

What does it mean that galaxies are moving away from us?

Back

It indicates that the universe is expanding, which supports the Big Bang Theory.

Front

What is Cosmic Microwave Background Radiation (CMBR)?

Back

CMBR is the afterglow radiation from the Big Bang, filling the universe and providing evidence of its early hot state.

Front

What is redshift in astronomy?

Back

Redshift occurs when light from an object is stretched to longer wavelengths, indicating that the object is moving away from the observer.

Front

What is blue shift in astronomy?

Back

Blue shift occurs when light from an object is compressed to shorter wavelengths, indicating that the object is moving toward the observer.

Front

What does the abundance of light elements tell us about the Big Bang?

Back

The abundance of light elements like Hydrogen and Helium supports the Big Bang Theory, as they were formed in the first moments after the explosion.

Front

What is the significance of the universe's expansion?

Back

The expansion of the universe suggests that it originated from a hot, dense state, consistent with the Big Bang Theory.