Marek Ziebart's Avatar

Marek Ziebart

@marekziebart.bsky.social

Professor of Space Geodesy, University College London. Me: mathematics, space technology, music, art, literature, philosophy, geopolitics.

23 Followers  |  50 Following  |  7 Posts  |  Joined: 16.07.2025  |  1.5426

Latest posts by marekziebart.bsky.social on Bluesky

And…

Oh, do the Hokey Cokey
Oh, do the Hokey Cokey
Oh, do the Hokey Cokey
That’s what it’s all about.
You put your tariffs up,
You put your tariffs down,
Up. Down. Shake ‘em all around.
You do the Hokey Cokey,
And you meet Poo-Tin
That’s what it’s all about.

12.08.2025 22:24 — 👍 4    🔁 1    💬 1    📌 0
Preview
Jim Lovell, who guided Apollo 13 safely back to Earth, dies aged 97 Commander of Apollo 13, who rescued his men from a near certain death in space, has died aged 97.

Sad to learn of the passing of a true giant and hero.

www.bbc.co.uk/news/article... Jim Lovell, who guided Apollo 13 safely back to Earth, dies aged 97 - BBC News

08.08.2025 20:11 — 👍 0    🔁 0    💬 0    📌 0

I’m minded of Kerouac’s quote in “On the Road” (it’s not his line): “Whither goest thou, America, in thy shiny car in the night?”

06.08.2025 12:18 — 👍 1    🔁 0    💬 0    📌 0
Preview
Ben Clatworthy on X: "BREAKING: UK Area Control Airspace (higher airspace) is all down, source at Nats, the UK air traffic controller, says - Affects ALL international flights" / X BREAKING: UK Area Control Airspace (higher airspace) is all down, source at Nats, the UK air traffic controller, says - Affects ALL international flights

x.com/benclatworth...

30.07.2025 15:25 — 👍 0    🔁 0    💬 0    📌 0
Post image Post image

To illustrate the coming congestion in that part of space. Here's a simulation my group did, first graphic 2019, second near-Earth space in 2028. Red dots - inactive satellites, yellow dots - active.

30.07.2025 11:07 — 👍 0    🔁 0    💬 0    📌 0

Would you settle for irritate? Indulge? Incite?

30.07.2025 06:08 — 👍 1    🔁 0    💬 0    📌 0
Post image

8.8 magnitude tsunamigenic earthquake reported on Kamchatka peninsula, Russia. It’s worth bearing in mind early estimates of the size of large earthquakes are often too low.

30.07.2025 06:01 — 👍 4    🔁 0    💬 0    📌 0

@marekziebart is following 20 prominent accounts