I recently wanted to try transmitting APRS messages to ISS, and I looked at the raw data transmitted by others, finding that they were using the path RS0ISS.As shown in the figure below.

I searched for a long time but couldn't figure out what this asterisk means.What does this mean? How do I input it? I've tested the data myself, and here it is:

Secondly, I noticed that many APRS tutorials about ISS use the path "ARISS", but I also found some vague comments from foreign users stating that ARISS is no longer used and to use RS0ISS instead. After searching for a long time, I still couldn't understand this, and I would be very grateful for any help from experienced users.