Roy Kerr

Recently, Roy Kerr claimed that Roger Penrose's Nobel prize-winning singularity theorem was wrong. This was widely hyped. But here, Roger Penrose and other leading relativists point out that it was Kerr who is in error. How did everyone get it so wrong ?youtube.com/watch?v=foq4nV…

@OMinazzoli Thanks - will have a look

.@RoyPKerr, do you know Alessandro's excellent simulations of your solution? @AlessandroRoussel/videos" target="_blank" rel="nofollow noopener">youtube.com/@AlessandroRou…

@WKCosmo Thanks, will look at it.

Cosmic web of dark matter as seen via weak gravitational lensing by the Subaru telescope. Beautiful. subarutelescope.org/en/results/202…

The Reinvention of Science telescoper.blog/2024/01/25/the… via @telescoper

150 YEARS AGO TODAY December 01, 1873 The SS Høvding arrived in Napier New Zealand from Oslo Norway after a voyage of 115 days. The passengers included my 2 year old grandmother and her Norwegian born father and Swedish born mother.

@mcnees @MeMargaretKerr Kerr has two symmetries. It is independent of time and rotationally symmetric. It is flat at large distances. It can be an actual star or a black hole but forget the star! The claim that it must be singular is false. The proofs of all singularity theorems assume something false.

Happy Rotating Black Hole Day! Roy Kerr submitted his breakthrough paper describing the spacetime around a rotating black hole #OTD in 1963. Physicists had been searching for decades for this solution to Einstein's field equations. journals.aps.org/prl/abstract/1…

@MeMargaretKerr Astronomy not astrology

My great grandfather at his observatory with his telescope. Dunedin 1870’s

@MeMargaretKerr La Fete Nationale celebrations a big deal in France since 1789

Bastille day 2009 fantastic fireworks from hotel balcony

What is Western Science? national.org.nz/what-is-wester…

We have one very naughty cat !

Fascinated to read this about liquid mirror telescopes (which I know nothing about) mainly because Henry Skey was my great grandfather. Unique liquid-mirror telescope set to survey zenith in India astronomy.com/news/2022/08/u…

The Fragility of Progress: Clint Smith and Robert Reich youtu.be/oJ50QAkKyxg via @ytcreators

@MeMargaretKerr @Change Signed and shared

Chancellor Michael Ahie and the Massey University Council: Save Our Sciences at Albany - Sign the Petition! chng.it/tDLdFTnX via @Change