Here's the real story:
* Frogs evolved on Earth: Like all living things, frogs developed over millions of years through a process called evolution. They adapted to their environment and changed over time, eventually becoming the frogs we know today.
* No one put them here: No one intentionally brought frogs to Earth. Their existence is a natural part of Earth's history.
As for going back to space, that's a bit of a science fiction idea. While we can send living things to space, it's very difficult to survive the journey and the conditions there. Frogs, like most animals, are adapted for life on Earth.
So, the next time you see a frog, remember that it's a fascinating creature that has been around for a very long time, evolving alongside all other life on Earth.