In the words of my physics teacher 'Not in your lifetime!'
Planets form from a disk of dust and gas when the star is just a proto-star.
Planets cannot form after the star has been formed.
There will definitely be more dwarf planets. It's unlikely we will find any more major planets in our solar system, though unless they are in some far flung unusual orbits with a low albedo. The possibility exists however.
No. Larger planets have more moons.
All the inner planets are terrestrial planets.
Jovian planets
The gas planets have more moons. Of all the gas planets non has fewer than 14 moons. Of the rocky planets, none has more than two. Mercury and Venus have none at all.
Yes more than you can ever imagine
There will definitely be more dwarf planets. It's unlikely we will find any more major planets in our solar system, though unless they are in some far flung unusual orbits with a low albedo. The possibility exists however.
No, but they will break up into small parts to make other planets
More planets. A typical galaxy probably has billions of planets.
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Some planets may potentially be destroyed by collisions with their stars or with other planets, but they cannot just disappear.
No.it goes on for ever and ever,and there can be infinity planets with life on them.
No. Larger planets have more moons.
All the inner planets are terrestrial planets.
Large planets have more gravity than smaller ones
of course they did
No. Planets cannot explode.