Yes, you can join Twitter Spaces and listen to them on a PC through the Twitter website on your browser. Currently, hosting a Space is only available on the Twitter mobile app, but you can still participate as a listener on a PC. To join a Space, simply click on the link to the Space on Twitter, and it should open in your browser. From there, you can listen to the conversation and interact with other listeners through text-based comments. Keep in mind that some Spaces may have limited functionality on PC, and it's always best to check the host's guidelines for the Space you're joining to ensure a smooth and enjoyable experience.