In 2017, a Nobelprize was awarded for the direct detection of gravitational waves, as predicted by Einstein's theory of General Relativity. But really we are still no sure that the events are indeed of astrophysical origin and not misidentified noise that originates on Earth.

In this video I tell you what gravitational waves are, how to measurement (directly and indirectly), what the problem is with the existing direct detection, what's the matter with LIGO's Nobelprize winning figure, and what's with the glitches.

References:

* Better climate predictions

https://www.nytimes.com/2019/06/12/opinion/climate-change-supercomputers.html
https://www.extremeearth.eu/

* Articles I have written recently about LIGO

In English

http://backreaction.blogspot.com/2019/09/whats-up-with-ligo.html

In German

https://www.heise.de/newsticker/meldung/Missing-Link-Zweifel-trotz-Nobelpreis-Streit-ueber-Gravitationswellen-Messungen-4566179.html

* How can LIGO detect signals?

https://arxiv.org/abs/gr-qc/0702079

https://arxiv.org/abs/gr-qc/0511083

* Plot was made by eye quotes:

https://www.newscientist.com/article/mg24032022-600-exclusive-grave-doubts-over-ligos-discovery-of-gravitational-waves/

* List of LIGO/Virgo run 3 alerts and retractions

https://gracedb.ligo.org/superevents/public/O3/