In all honesty, I am unaware of such things.
I do not discount that things are likely much stranger, than we know.
I have heard, that European and other nations take such things more serious (publicly) than the US.
I keep pretty up to date on new scientific research, and I have yet to see anything that is what I consider irrefutable proof.
There is the “Phobos monolith,” on Phobos (moon of Mars.)
It’s likely a natural feature, but who knows.
For repute, you just need people saying things. To report, is to observe, summarize and present facts. No one has observed an ancient Mars antenna, but that hasn’t stopped people from saying there could be one.