This photos shows erosion in action on this island – like tje central peak in the martian Gale Crater, layers of rock are visible – the lower ones must have been laid down before the higher ones allowing a rover to sample different geological ages as it climbs the central mountain of the crater.
Island showing layering in rock similar to central mointain in the martian Gale Crater:
Thought a few of you might be interested in downloading this attached (free) publication about Gravitational Waves!
For these nights that are too light and/or too cloudy, just watched a really good documentary (if slightly old) on statistics which has a really good section from about 46 mins in on sky surveys and using statistics in digital astronomy to enhance our understanding:
For those of you interested in this sort of thing, here is a puzzle.
I retired fully a couple of weeks ago, and the physicists in my old department gave me a klein bottle.
It is a sort of 3-dimensional Mobius strip (https://en.wikipedia.org/wiki/M%C3%B6bius_strip)
It only has one surface, and therefore has no volume (and I have a certificate to prove it!)
You can get water into the bottle.
Given it has no volume, where is the water? In another dimension? Has it gone through a worm-hole?!!
I will bring it along to the next meeting, (as long as it hasn’t disappeared into another dimension!)