The Origin of Life and Stellar Distances

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What phenomenon allows us to observe stars in the past?

Stellar distances

Why is the origin of life considered a unique event in the history of the universe?

It signifies the emergence of life from non-life

In the context of the universe's vastness, how does Earth compare?

It is almost insignificant in size

What is the main focus of the Big Bang theory?

<p>The expansion of the universe</p> Signup and view all the answers

How did hydrogen and helium eventually form according to the text?

<p>Following a decrease in temperature post-expansion</p> Signup and view all the answers

What gases were released from the molten mass covering the surface of early earth?

<p>Water vapor, methane, carbondioxide, ammonia</p> Signup and view all the answers

What did the UV rays from the sun break water into on early earth?

<p>Hydrogen and Oxygen</p> Signup and view all the answers

Who proposed that the first form of life could have come from pre-existing non-living organic molecules?

<p>Oparin of Russia and Haldane of England</p> Signup and view all the answers

What did S.L.Miller observe in his laboratory scale experiments in 1953?

<p>Formation of amino acids</p> Signup and view all the answers

What limited evidence led to the acceptance of the first part of the conjectured story - chemical evolution?

<p>Formation of amino acids in laboratory experiments and analysis of meteorite content</p> Signup and view all the answers

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