Posts by Jonathan O'Callaghan
Hey space people, I'm looking to speak to experts about the undiscovered irregular moons of the Solar System. How many might there be? What are they telling us?
If that's you, do get in touch: jdaoca[at]gmail[dot]com
Thanks!
But always room for more. Editors, if you're in need of any space writing, do get in touch.
It's amazing what a holiday can do to refresh the brain. Working on so many fun stories at the moment on moons, telescopes, nuclear propulsion, and more!
Yeah, presumably. It's the new PR version of "Dear [insert name here]"
I'm getting offered interviews with so many experts at the moment. Is it an AI thing? Can't work it out.
Picture of the Great Wall of China
Saw the Great Wall of China today. Can confirm it was pretty great.
My latest!
Quite nice here!
Image of someone’s phone with traffic light symbols
Cool thing about China (currently in Shanghai): all the lights work on some sort of centralised system so you can see how long until they change on map apps.
Spectacular high-resolution image of our home planet viewed through the Orion Crew Module window by the Artemis II astronauts as they continue their journey to the Moon on Flight Day 2, 3 April 2026 (pic: NASA)
A full disc image of Earth, as seen from the Orion Crew Module. The planet is a pale blue, swirling with white clouds and glowing slightly lighter blue in place from reflected light. At lower left, a large brown landmass is Africa, with Spain and Portugal with twinkling lights where the planet curves. At top right, auroras glow in a thin green glow, just barely separated from the planet's surface. Earth is set against the black of space (pic: NASA/R.Wiseman)
😮 Awesome views from Day 2 of #Artemis II this morning.
@exploration.esa.int @esaearth.esa.int
So far in Bangkok there's... not a lot of interest in Artemis II. Spoke to quite a few Thai people today who simply weren't aware of it. Maybe that'll change when it reaches the Moon!
Amazing footage. Great view of the launch at 23:50.
Last time humans went to the moon Tottenham Hotspur were (nearly) on the cusp of relegation. Glad there are no parallels to be drawn today.
Artemis ii
If you've got a hankering for rockets, why not read my latest story for Aerospace America, all about Rocket Lab's upcoming Neutron rocket. Fun!
aerospaceamerica.aiaa.org/features/roc...
If you've got a hankering for rockets, why not read my latest story for Aerospace America, all about Rocket Lab's upcoming Neutron rocket. Fun!
aerospaceamerica.aiaa.org/features/roc...
Glad you made it!
Cool graphic
Think they missed nearly every major moment
Did NASA TV hire the F1 TV director
How do LLMs deal with April Fools papers? Can they tell they aren’t real?
Does anyone know if China is planning an equivalent of Artemis II (i.e. crewed lunar flyby/orbit) before their landing in 2030, or not?
Yes but it’s still worthwhile taking this semi seriously just to show what would happen. Even 10% would be huge.
Thank you Alejandro
I must be one of like two people in the world that’s excited to have just done an interview with the International Telecommunications Union.
Here is Hugh's very good post on this (actually he says 4 billion, not 1 billion).
www.linkedin.com/pulse/one-mi...
This is like the Titanic night sky
Amazing stat from space debris expert Hugh Lewis: if SpaceX launches 1 million orbital data centre satellites it will have to perform 1 billion collision avoidance manoeuvres every year, or one manoeuvre every 0.03 seconds