Geraint F. Lewis

Not quite - it's stuff moving at relativistic speeds in accretion disks - the friction drives the temperatures to ~millions of degrees which radiates intensely (coupled with the complex magnetic outbursts).

Starring the wonderful Julie Christie - equally scarred!

South American Bin Chickens are prettier than the ones we have in Sydney

Just realised that the spell checker changed Finkelstein to Frankenstein in the General Relativity and Cosmology exam!

I very much disagree - the enclosed pie was for the masses to be eaten on the job, but a good 🥧 eaten at the table needs just a crust.

Pseudo-pie? They are just pies and I'm not even an American.

It was early his career and I guess everyone has to start somewhere. Great film tho.

The Gravitational Astrophysics group at @sydney.edu.au

Both statements are consistent - dark matter annihilation is a possibility, but we don't know enough about the distribution of astrophysical gamma-ray sources to say categorically that it's not a more boring explanation.

Thoughts on the dipole tension?

We do, sort of, for nearest stars, but as we look radially in or out, the shearing due to the different angular velocities increase.

[Not wanting to contradict, but the disk has differential rotation throughout it - the linear speed is ~220 km/s, but this means that the angular speed drops with distance. The spiral pattern might rotate as a "rigid" structure, but it doesn't contain the same stars as it does so.]

Jim Simons - Wikipedia

"You can teach a physicist finance but you cannot teach a finance person physics." - Jim Simons (en.wikipedia.org/wiki/Jim_Sim...)

Are you related to John Michell, the first person to predict the existence of black holes? That would be a cool coincidence!

If you are the same person, that would be even more astounding!

en.wikipedia.org/wiki/John_Mi...

Yes, it's explosion was part of the opening of Season 2 of COBRA, but I knew about it before then too :)

I was a teenager and watched the release of the video (on MTV?) at midnight when visiting cousins. Remember it vividly.

"We"? This suggests that it was some outside force that drove the dismissal.

It appears that all the people involved were Australian, even Norman Gunston.

They don't do Guy Fawkes in Australia (but I discovered this weekend that they do in New Zealand). But do we celebrate because he was captured, and the gunpowder plot failed, or because he tried?

Oh I just give up (this was on ABC in Australia, source apparently NASA). And every time anyone calls these moons by a stupid name like Beaver, a small astronomy fairy dies.

Dear palaeontologist - please feel free to chat to astronomers about how orbits work so you don’t end up with gaffes like this in your books,

I am dipping my toes into Fast Radio Burst research, and I discovered they have a "sad trombone effect".

Getting ready for my talk in Auckland tomorrow night

Getting one of these off a group of students you have supervised for a year really means something to me.

Not a single mention of the graphics for Unknown Pleasures are pulsar signals taken from The Cambridge Encyclopaedia of Astronomy.

American Pie has only one, possibly two if you count Vincent

Time to start posting current reading

Cofiwn: World remembers Aberfan disaster Stephen Price Today, people across the world remember one of the greatest tragedies in Welsh history – the 1966 Aberfan disaster – which left a small mining village robbed of an entire generation. On ...

Today, people across the world remember one of the greatest tragedies in Welsh history - the 1966 Aberfan disaster - which left a small mining village robbed of an entire generation

Just to note that sharkmouth has fangs, something that sharks don't have. It seems the painter adlibbed a bit on the standard design.

YouTube video by History of the Universe Did We Just Discover The Universe's Greatest Weakness?

I authored a new video for the History of the Universe on just what the Higgs boson is, and how it could destroy the universe.

#scicomm #physics #cosmology #particlephysics

youtu.be/JNgEMyTxB8E?...

Why do you think we ignore evolution? We wrote about it in our book and in this article. Evolution doesn't save you if there's not even the raw material for life to form - www.royalsoc.org.au/wp-content/u...