If you touch two CLEAN blocks of the same metal together in space, they weld! Atoms in solid metals move a bit. Touch two clean surfaces together, and the atoms can't tell they're in different blocks so they become one group of atoms, ie ONE SOLID. (Gif: homemadetools.net/forum/cold-wel…)

Amazing photo of Jupiter

Great thread summarizing the history of fusion. For example, US financing of fusion actually decreased since 1976! 🧐

I was today years old when I found out that in the 1930s Ireland led a huge campaign against... jazz. 🙌

I had read the Sandman comics two times. And I only got the Cereal convention pun today when watching the netflix show🤦‍♂️ #sandman

Enjoyed the first talk at the 2022 European Einstein Toolkit Meeting by @scriwalker ! Takeaways: - Waveform detections work like Shazam 〰️ - EOB is pepsi, Phenom is Coke 🔵🔴 - Sheldon Cooper thinks numerical relativity is just typing up things, Sascha disagrees 🧮 #eetm2022

Miguel Zilhão gaves a great summary of numerical relativity at the European Einstein Toolkit Meeting. Plus. Bouncy stuff 🫧 (video of head-on collision of boson stars) #eetm2022

This is what I love about numerical simulations as compared to analytical work. It is just so much more visually engaging ✨(From the talk about GRMHD by Bruno Giacomazzo 🇺🇦 at the #eetm2022)

Lovely choice of illustration picture for collaborative challenges when developing the Einstein Toolkit by Roland Haas 🦍🦍#eetm2022

🪐The remnant of a binary neutron star compared with the scale of the Earth. Impressive! (A video Wolfgang Kastaun just showed us at the #eetm2022) youtube.com/watch?v=xIthgc…

Continuing with some of the talks at the #eetm2022, Matteo Breschi is telling us about the analysis of neutron star binary mergers💫💥 Big plans for the next-gen gravitational-wave detectors!

🌃Still time to register for tonights' talk about gravitational waves at UCD!

Age when achieving tenure 1953 vs. 2022

Pls

On February 9, 1990, Carl Sagan gave this speech before the 5th Emerging Issues Forum at NCSU, expounding on climate observations and energy strategies for a sustainable future, emphasizing solar [full speech: buff.ly/3RZhLOY]

Yeah you have New Year’s resolutions but do you have

me and Klára Witzany Hutková yesterday