How old is Kaspa?

Excuse me, I've been hearing a lot about Kaspa lately and I'm quite fascinated by this cryptocurrency. But there's one thing I'm still not quite clear about. Could you possibly tell me, how old is Kaspa exactly? I'm trying to understand its history and development better, and knowing its age would certainly help in that regard. Is it a recent addition to the crypto world, or has it been around for quite some time? I'm just curious to know more about its journey so far. Thank you for your time and assistance.