How Everything Started
Have
you ever looked at the sky and wondered where everything came from? The stars,
the planets, even us? Scientists believe it all began with something called the
Big Bang.
The
Big Bang means the universe started a long time ago about 13.8 billion years
ago through an explosion. Everything was in one tiny, hot spot, and then it
began to grow very fast.
The
first clue is that the universe is still getting bigger. A man named Edwin
Hubble found that galaxies are moving away from each other. The farther away
they are, the faster they go. This shows that space is stretching, like blowing
up a balloon (University of Western Australia, n.d.).
The
second clue is a soft glow in space called cosmic microwave background
radiation. Scientists found it in 1965. It’s heat left over from the Big Bang,
and we can still see it today (BBC, n.d.).
The
third clue is that we see a lot of light elements like hydrogen and helium in
space. These elements were made just a few minutes after the Big Bang.
Scientists predicted this, and what we see matches the prediction (University
of Western Australia, n.d.).
So
why does this matter? Because this is our story. Learning about the Big Bang
helps us understand where we came from, where we are and maybe where we are
going.
References
BBC. (n.d.).
How do we know the Big Bang actually happened? https://www.bbc.co.uk/teach/articles/zjn68xs
University of
Western Australia. (n.d.). Evidence for the Big Bang. https://www.uwa.edu.au/study/-/media/Faculties/Science/Docs/Evidence-for-the-Big-Bang.pdf
Nice and clearly understand thank you 🙏
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