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What is the main evidence for the Big Bang theory?

The main evidence that we currently have to support the Big Bang Theory is the cosmic background radiation. This is electromagnetic radiation that appears to be evenly spread throughout the universe. It is mostly in the microwave spectrum, equating to a temperature of about 3K. This suggests that the universe was once very hot and compressed, and as the universe has expanded, the once very high energy, short wavelength radiation has red-shifted to lower energy, longer wavelength microwave radiation.

Sam E. A Level Extended Project Qualification tutor, A Level Physics ...

2 years ago

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Tom C.

Degree: Engineering Science (Masters) - Oxford, Jesus College University

Subjects offered: Physics, Maths+ 3 more

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“About me I’m Tom, I’m a third year Engineer at Oxford University. I’m very patient and friendly and I’ve always had love for how things are put together, this has gone onto the science behind it. In our lessons I want to show you what...”

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Degree: Natural Sciences (Bachelors) - University College London University

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“Hi, I'm a first year undergraduate at University College London studying Natural Sciences. I've always had a passion for science and think that tutoring is a great way to bring that across and inspire it in others.  In the past I've t...”

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Louis S.

Degree: Mathematics (Bachelors) - Cambridge University

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“ second year undergraduate at the University of Cambridge, studying for a B.A. in Mathematics, having received A*s in A-Level Mathematics, Further Mathematics (Edexcel) and Physics (AQA)”

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Sam E.

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Degree: Physics with Australian Study (Masters) - Exeter University

Subjects offered: Physics, Maths+ 1 more

Physics
Maths
Extended Project Qualification

“Hi, I'm Sam. I'm studying for a Masters in Physics at the University of Exeter. I love space, and hope to go into the field of scientific research in space sciences. I'll use this passion for my subject to tutor Maths, Physics and EPQ.”

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