A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

How many solar systems are there in the universe?

Best Answers

The universe contains an estimated 100 trillion galaxies in the universe, including the Milky Way. The Milky Way contains at least 100 trillion stars, and each star has the possibility of having a solar system around it. read more

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 (that's 1 then 21 zeros) planets in the observable Universe. read more

Encyclopedia Research

Wikipedia: