Sera Markoff
@profsera.bsky.social
Professor Astrophysics/Astroparticle Physics @ U Amsterdam. All things black hole, member Event Horizon Telescope, Africa Millimeter Telescope, Cherenkov Telescope Array. Space, sci-fi, cats, music, valve amps, other unabashed geekery. www.seramarkoff.com
On the way up to #ALMA around 4000m we had to make way for one of the two massive telescope dish transporters, “Otto”. It weighs 130 tons and can lift 110 ton telescope dishes to reconfigure the array! 🔭🧪
November 10, 2025 at 5:03 PM
On the way up to #ALMA around 4000m we had to make way for one of the two massive telescope dish transporters, “Otto”. It weighs 130 tons and can lift 110 ton telescope dishes to reconfigure the array! 🔭🧪
An unbelievable privilege and experience today visiting the world leading #ALmA telescope at 5000m in Chile! 🧪🔭 Plus we saw some local fauna!
November 10, 2025 at 4:56 PM
An unbelievable privilege and experience today visiting the world leading #ALmA telescope at 5000m in Chile! 🧪🔭 Plus we saw some local fauna!
My first ever view of the amazing #ALMA telescope 🧪🔭 at 5000m in Chile, that forms the core of the @ehtelescope.bsky.social!
November 10, 2025 at 2:24 PM
My first ever view of the amazing #ALMA telescope 🧪🔭 at 5000m in Chile, that forms the core of the @ehtelescope.bsky.social!
Just one week until the @mayodarkskies.bsky.social festival! I'm excited to give a public talk, but also to see @paraphrasestudio.bsky.social again. Rae achieves the impossible by making insane visualisations of talks in real time! 🔭🧪Here's the one she made during my #blackhole talk back in 2022:
October 24, 2025 at 2:01 PM
Just one week until the @mayodarkskies.bsky.social festival! I'm excited to give a public talk, but also to see @paraphrasestudio.bsky.social again. Rae achieves the impossible by making insane visualisations of talks in real time! 🔭🧪Here's the one she made during my #blackhole talk back in 2022:
It’s starting!! @spacerocksofficial.bsky.social stage at #ESAOpenDay with mission update by ESA DG, Joseph Aschbachen. 🧪🔭 We’re up next!
October 12, 2025 at 8:40 AM
It’s starting!! @spacerocksofficial.bsky.social stage at #ESAOpenDay with mission update by ESA DG, Joseph Aschbachen. 🧪🔭 We’re up next!
I went to a gastropub with my group today while visiting the UK and they had this adorable doggy menu!!
October 7, 2025 at 10:47 PM
I went to a gastropub with my group today while visiting the UK and they had this adorable doggy menu!!
My mom posted this picture of a scale from her primary care clinic, which I absolutely love, being an astrophysicist. But also the messaging is great!
October 5, 2025 at 8:06 PM
My mom posted this picture of a scale from her primary care clinic, which I absolutely love, being an astrophysicist. But also the messaging is great!
But wait, there's more! Our @ehtelescope.bsky.social outreach folk made a fun explanatory movie of the new M87* #blackhole results, complete with Game of Thrones style soundtrack! 🧪🔭
September 16, 2025 at 11:40 AM
But wait, there's more! Our @ehtelescope.bsky.social outreach folk made a fun explanatory movie of the new M87* #blackhole results, complete with Game of Thrones style soundtrack! 🧪🔭
Check out our new results on the M87* #blackhole w/ @ehtelescope.bsky.social ! We now have 3 frames in a 4yr "movie", including polarisation ⇔ magnetic fields. It's like tracking extreme sunspots just outside a black hole, the brightness and fields flip, yet the shape stays the same bc...gravity!
September 16, 2025 at 11:23 AM
Check out our new results on the M87* #blackhole w/ @ehtelescope.bsky.social ! We now have 3 frames in a 4yr "movie", including polarisation ⇔ magnetic fields. It's like tracking extreme sunspots just outside a black hole, the brightness and fields flip, yet the shape stays the same bc...gravity!
Very proud to have won the @api.uva.nl 1 minute elevator pitch prize, from the last year of pizza lunches! Whomever our wheel randomly selects has to give a 1 min pitch about their work, and mine came in at 59s! I now get the trophy for the next year, complete with a picture of pizza on it! 💪🍕
September 11, 2025 at 3:21 PM
Very proud to have won the @api.uva.nl 1 minute elevator pitch prize, from the last year of pizza lunches! Whomever our wheel randomly selects has to give a 1 min pitch about their work, and mine came in at 59s! I now get the trophy for the next year, complete with a picture of pizza on it! 💪🍕
My favourite ship from yesterday’s #SAIL festival sail-in parade. This one looks like it’s right out of #GameofThrones, about to attack Amsterdam central station!
August 21, 2025 at 7:46 AM
My favourite ship from yesterday’s #SAIL festival sail-in parade. This one looks like it’s right out of #GameofThrones, about to attack Amsterdam central station!
We just heard that there's a #BurningMan art installation that looks a lot like our polarised #BlackHole images w/ the @ehtelescope.bsky.social🧪🔭. I wish I could have a (smaller) version for my office, this is super cool! If someone sees it IRL pls post a pic! 🙏
burningman.org/event/2025-a...
burningman.org/event/2025-a...
August 13, 2025 at 11:42 AM
We just heard that there's a #BurningMan art installation that looks a lot like our polarised #BlackHole images w/ the @ehtelescope.bsky.social🧪🔭. I wish I could have a (smaller) version for my office, this is super cool! If someone sees it IRL pls post a pic! 🙏
burningman.org/event/2025-a...
burningman.org/event/2025-a...
The only thing better than having a boat in Amsterdam is having friends with a boat in Amsterdam 😁🛥️
August 3, 2025 at 4:23 PM
The only thing better than having a boat in Amsterdam is having friends with a boat in Amsterdam 😁🛥️
Someone's having fun with their hotspot name 😂
July 21, 2025 at 8:24 AM
Someone's having fun with their hotspot name 😂
Guest book from our team meeting at @issibern.ch on the #BlackHole in our galaxy’s centre, Sgr A*🔭🧪. PhD student Nicole Ford reimagined the river flowing through Bern as a magnetic flux tube in the accretion disk interacting with a current sheet, a potential site of high-energy flaring!
July 5, 2025 at 10:37 AM
Guest book from our team meeting at @issibern.ch on the #BlackHole in our galaxy’s centre, Sgr A*🔭🧪. PhD student Nicole Ford reimagined the river flowing through Bern as a magnetic flux tube in the accretion disk interacting with a current sheet, a potential site of high-energy flaring!
Watching with awe the first images from @vrubinobs.bsky.social 🧪🔭 Congratulations to the team, it's an amazing achievement and going to be so exciting to see what new things we learn about the universe! Here are a couple screen shots from the broadcast that don't do it justice! 10M galaxies/image!
June 23, 2025 at 3:36 PM
Watching with awe the first images from @vrubinobs.bsky.social 🧪🔭 Congratulations to the team, it's an amazing achievement and going to be so exciting to see what new things we learn about the universe! Here are a couple screen shots from the broadcast that don't do it justice! 10M galaxies/image!