As you go through Honkai: Star Rail, you might see a blue bubble called a Memory Bubble around. However, approaching one to investigate it won’t net any reaction early on. This is because you actually need to speak to one of Herta’s dolls on the station to figure out what’s going on. Fortunately, once you do go through the conversation, it’s easy to start reading through these events and picking up extra Credits.
I unlocked the ability to view any Memory Bubble in Honkai: Star Rail by talking with the Herta puppet in the Storage Zone. I was at Trailblaze level 21 when I finally got around to doing so. She’s standing at the point below, and you need to cross the light bridge to reach her. It’s the same puzzle found in “Signs of Fragmentum III”. After you get to her and agree to the NDA, you’ll get the ability to view any Memory Bybble in Honkai: Star Rail.
Actually checking one out is fairly easy. All you need to do is approach it and select “Touch the Memory Bubble.” The screen will go back, and you’ll be able to read through someone’s experience on Herta Space Station. You’ll then also get 1,000 Credits for your find. There are 20 total, adding up to 20,000 Credits. Finding them all gets you the Sensory Socialization achievement and five Stellar Jades.
Honkai: Star Rail is available for PCs and mobile devices, and PS4 and PS5 versions are in development.