One for the Astronomers amongst us.....

[#1]

Nice time lapse video shot from a Swissair plane from Zurich to a Sao Paulo.

https://blog.flightradar24.com/blog/start-your-week-staring-at-the-stars/

[#2]

@shutter did you see the other day on flightradar a RAF Rivet joint spy plane over Russia ? 

http://www.independent.co.uk/news/uk/home-news/british-spy-plane-tracked-russia-kaliningrad-rivet-jo...

[#3]

I thought it was common knowledge that Russian military aircraft tested NATO, incl. UK, responses on a regular basis.

[#4]

@rongtw   Yes, I saw it in one of the newspapers... but didn`t actually, see it on my copy of FR24... I only use it occasionally, just for something to do, when I am bored.... !  Occ I notice some RAF flights over the UK.. but don`t know the significance of them, any more than anyone else would..  it`s just an "interesting" plane...