Question

how many planets in the universe?​

Answer 1

✌ There are approximately 2 billion trillion galaxies in the observable universe,,, if we talk about stars then 1 galaxy contain about 400 billion stars,,,, then you can predict how many planets in the observable universe,,,,

✌ if one star have 8 planets ✌✌

Answer 2

Answer:

About 10^21 planets ( observable universe only)

Explanation:

In terms of the number of solar systems present in the universe, there are something like 300 billion stars in the Milky Way, so if 10 per cent of them have planets there are around 30 billion planets in our galaxy alone, and there are over 100 billion galaxies in the observable Universe for a total of something in the order of 10^21 planets in the observable Universe.