Question

why do earth is small

Answer 1

Answer:

Space around Earth is dusty; it's full of asteroid debris, comet trails and ionized particles streaming away from the sun. And as our planet flies through that dust, our gravity vacuums it up. The dust enters the atmosphere, drifts around and eventually settles on the surface. ... So, overall, Earth is getting smaller.

Explanation:

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Answer 2

$\tt{Several \: reasons \: behind \: why \: earth \: is \: small:}$

• Gas giants require far less material to make for the same size. Saturn requires less than a ton of material for every cubic meter, but Earth requires 3.
• Earth couldn't have been a gas giant. This is because the young Sun blew away all gas in the inner solar system, so there wasn't any to make a gas giant.
• If Earth had formed anywhere else, life likely wouldn't have evolved on it - and this it wouldn't be Earth.