Why does the thread on resource in the moon have a link to a webpage under the thread title?

[What_Exit]

If a Hyperlink is pasted into the thread title it creates this link looking like a tag.

@Dewey_Finn

That site is linked to in the OP of the thread.

True, but not the cause of the link that looks like the tag.

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See my test thread:

The Radio Wave Mystery That Changed Astronomy : Short Wave

Testing that a Hyperlink is pasted into the thread title it creates this virtual link looking like a tag.