Brian Cox

@JonnyRollups It follows from the equivalence of all inertial frames that there is no such thing as absolute space. Again, see my book on black holes, or my earlier book Why Does E=mc^2 - available from all good book shops ;-)

@ProfBrianCox where is the earth moving to?

The thread below is an example both of mind numbing idiocy and why on-line content is essentially useless because of A.I. and / or old fashioned ‘creative’ editing. The physics here is that to a good approximation over a short space of time, the surface of the Earth is an inertial frame of reference in Newtonian Mechanics. If you want to, you can measure the rotation over short timescales (a Foucault pendulum for example), and you can figure out it’s going around the Sun by looking out of the bloody window or doing a bit of astronomy. The statement of the equivalence of all inertial frames is a deep one and led historically (with inertial frames suitably defined) to General Relativity - see any book on the subject, including my last book on Black Holes - available from all good book shops ;-)

@piers_J_morgan Orbits are not like water down a plug hole. If you were to turn the Sun into a black hole of the same mass the Earth would continue to orbit as it does now.

@ProfBrianCox Brian, can you tell me, when much of science is observational evidence, why is our galaxy not disappearing into the black hole at it's centre, when the spiral formation is indicative of that, like water down a plughole?

@kpa421 Actually a little special relativity will also give you a deeper understanding of the relationship between electric and magnetic fields.

@ProfBrianCox But how do magnets work?

Heading to Sydney tomorrow with the essentials for the live show.

3/11, explore the dazzling complexity of nature as BBC scientist @ProfBrianCox takes you on a visually stunning, mind-expanding “journey through space and time.” Get tickets this Thursday at 10AM with presale code ASTRO: bit.ly/njpacbriancox

✨JUST ANNOUNCED - PROFESSOR BRIAN COX✨ ✨🌏 @ProfBrianCox will be here on Sunday, November 22 at 7:30pm! He is back with his new world tour Emergence! 🌏✨ Tickets go on sale this Friday at 10am More info: TheMahaffey.com

JUST ANNOUNCED:✨@ProfBrianCox brings his brand-new tour, Emergence, to the Palace Theatre on MARCH 5, 2027! Be one of the first to get tickets starting this Fri at 10am -> bit.ly/PalPBCox27

JUST ANNOUNCED @ProfBrianCox brings his brand-new tour, Emergence, to Conexus Arts Centre on May 16, 2027! Explore the story of our universe with one of the world’s most captivating science communicators. Tickets on sale Friday May 1, 2026. conexusartscentre.ca/event/brian-co…

Having lunch in Stavanger and was asked whether I work in Oil or IT. I must work on my look …..

@VirtualAstro They don’t allow me to walk anywhere that I might bump into something!

@ProfBrianCox Totally with you on this. I often collide with them in the dark behind the screen 🤣🤣🤣

I like flight cases and XLR leads and all bits of touring stuff …. I found a way of living out my ‘80s rock and roll ambitions by talking about Quantum Chromodynamics … Stavanger this evening and tomorrow, then off to Sydney ….

@Nirosta Yes! Looking forward to that !

@ProfBrianCox Living your best life ✨️ 🙌 See you in October in Liverpool

@liisamaria4 Yes I did ! Thank you :-) We have now corrected that and I was not pleased !

@ProfBrianCox Did you notice that Stavanger was misspelled on the t-shirt? Told to that guy selling the merch. You were wonderful in Helsinki! 🔥

@nicknet100 Obligatory

@ProfBrianCox And of course, sunglasses inside.

@Itschriselena Thank you :-)

Saw @ProfBrianCox in Oslo yesterday, and I'm completely mind-blown. While walking back to the hotel, I had to look up at the sky and just admire it. 10/10.

Possibly the hardest measurement in physics.

James Burke really is in a different league …

Tromsø airport

The approach to Tromsø is quite nice today …. :-)