Planets are made from small bodies such as asteroids, as long as we don’t run out of dust and gas in our universe, planets can be made from these planetary embryos.
Yes, new planets are being made around some star as we speak! They are made in something called a proto-planetary disc. This is a disc made of highly dense dust and gas surrounding a newly-formed star. This dust and gas can collapse and form young planets orbiting the star.
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