If you're doing the thunderlord quest final step, which went live today, you'll end up at the cosmodrome. Once you've completed the quest steps Amanda will tell you to teleport back. But don't do this right away, there are a few scannables in old Russia you might want to check out, and maybe even more to find.
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I’m going back tomorrow on my Hunter to find my Outbreak Prime if you know that name you are a tru Guardian