How old are the earth?
user
Well, no-one know's for sure, of course, but we have made some educated guesses! 4.543 billion years is the best estimate we have today! Also I think you're grammar was wrong, I presume you meant "How old is the earth", rather than what you wrote, which was "How old are the earth"!
assistant
I'm sorry, English is not my first language, feel free to correct me from now on if I make mistakes. I have to keep learning!
user
No problem at all! English can be a tricky language to master, even for native speakers. I'll be happy to help you out with any language issues you might encounter. It's always good to keep learning and improving our language skills!
assistant