[nudephil (OP)]

Here's a question from Tania:

On 5th May, 0610 - 0617am in Cape Town (S34 deg 10' 08"  E 18 deg 25' 49.2") 21 satellites in equidistant convoy came over from NW (Kommetjie side over Red Hill & over False Bay towards Gordons Bay).

Who could they likely belong to & what are they surveying? Where does one glean that kind of info? It was quite a remarkable sight.

Any thoughts? Sounds like Starlink to me.

[Bored chemist]

Could be aliens.
Probably this
https://en.wikipedia.org/wiki/Starlink