The Talking Space Podcast: a free and open exchange of ideas and opinions on all things space. Tweets by @thenasaman, @genejm29, @katrobison and @larryherrin.

The Universe and Beyond
Joined October 2009
Talking Space retweeted
I have spent 23 years documenting the global LED transition of city lighting from space. Across my 4 missions to the ISS, I have photographed every major city on Earth, building a data set of the gradual replacement of sodium vapor lighting with LEDs. The warmer, yellow-orange of gas discharge lamps has been phased out worldwide to multi-colored LEDs, citing energy savings and environmental reasons. Widespread adoption has markedly changed the way our cities look from orbit, and as many have pointed out, how they feel to those on the ground! Here is a collection of the most striking before-and-after photos I have observed:
Miami, Florida as seen from the ISS in 2025. This city has changed tremendously since my previous mission, replacing its yellow-orange sodium vapor lights with multi-colored LEDs. The city grid really pops! This LED takeover of city lighting is world wide.
536
3,418
445
32,295
4,212,355
One week since the launch of Nancy Grace Roman and we're eagerly awaiting those first photographs. 📸 🌌 Before we catch that first glimpse (anticipated for early 2027), Roman has a three-month and one-million-mile trip to Sun-Earth Lagrange point. Soon enough, the data from the telescope's wide view and infrared vision will help scientists survey our universe's deep history and phenomena like dark matter, dark energy and exoplanets.
8
27
3
116
6,741
Here's some additional content via one of our @talkingspace listeners. I find the stories of how we started and progressed to be very interesting. Thank you @infoshaman.bsky.social for sharing youtu.be/_uN_e13It2c?si=fmxB…
201
Our latest pod has just dropped! We discuss ISS crew transitions, wildfire threats to NASA's Deep Space Network, growing criticisms of the Artemis program architecture, and a 1960s navigation satellite still transmitting signals today. Check it out: talkingspaceonline.com/space…
124
Talking Space retweeted
Talking Space Episode 1805 reviews ISS crew transitions, wildfire threats to NASA's Deep Space Network, growing criticisms of the Artemis program architecture, and a 1960s navigation satellite still transmitting signals today. talkingspaceonline.com/space… See also @talkingspace
1
2
86
Talking Space retweeted
AvGeeks, assemble! MAX POWER lands in Florida on Nov. 7–8, with an F‑104 flyover by the Starfighters and NASA’s ER‑2 on static display. Get the details: nasa.gov/maxpower
151
309
27
1,856
1,018,801
Unlocking a new cosmic lens and exploring the unknown. 🌌 Learn more about NASA's new observatory, Nancy Grace Roman Space Telescope, on the latest podcast episode of We Choose To Go To Kennedy. bit.ly/469rv1F
1
2
15
2,192
Talking Space retweeted
Day 201 orbit 3115 — Let’s celebrate 200 days in space with an inspiring video! 🎉 My amazing support team at the European Astronaut Centre (EAC) launched the εpsilon Push-Up Challenge after liftoff: adding one push-up 💪 for every day of the εpsilon mission. Since then, it has spread to other ESA sites across Europe, and it means a lot to me to see so many people taking part! And before my trainers and flight surgeons start worrying: this was filmed before the EVA marathon began... 😉 Thank you all and congratulations on completing more than 150,000 push-ups! Woohoo! Your collective energy is a real boost, and I'm lucky to have such an incredible team behind me 🫶 🎥 @esa / @NASA #εpsilon • @esaspaceflight • @Space_Station • @NASAJohnson •
36
183
9
1,218
22,746
Talking Space retweeted
21
213
30
408
80,059
We’ve got our starglasses on! 🤩 Roman’s Coronagraph Instrument has activated. This system of masks, prisms, detectors, and self-flexing mirrors will block out the glare from distant stars and directly image the planets and disks in orbit around them. go.nasa.gov/4gDy8hu
46
388
23
2,589
67,542
Talking Space retweeted
Small but mighty, pixels are a powerful piece of peering into deep space.🔭👀 Want to claim a tiny part of NASA's next big discovery? Sign up to Adopt a Pixel in the 1st images from @NASARoman! Claim your pixel & be part of this historic moment! science.nasa.gov/mission/rom…
3
18
1
131
5,538
Across from NASA KSC is the VAB. If you're near the water at the turning basin you hear the sounds of the water, Osprey overhead. If you're next to the Saturn Causeway you see the Crew-10 Astronauts in Teslas going to pad 39A launching at 7:48 PM EDT
1
426
Talking Space retweeted
✨2024 was a BIG year for Astrobotic so we're going to revisit our favorite milestones all month long...Starting with January 8, 2024 at 2:18am: Peregrine Mission One launched aboard @ulalaunch's #VulcanRocket. 🚀🌕#PM1 #Launch #YearInReview Video Credit: ULA
3
17
4
147
5,549
Talking Space retweeted
Episode 1611 of @TalkingSpace has just debuted! We look at @jimmayjr's detailed description of why #Starliner remains docked at the ISS, what's going on with NASA's SpaceSuit contract, and will #Starship be launching from LC-39A anytime soon. podbean.com/ep/pb-6yvj4-1669…
1
4
12
1,051
New Episode!! Contains interviews with 4 key members of the #GOESU #GOES19 Team: @NASA's John Gagosian, @NOAA's Krizia Negron, Chris Reith of @L3HarrisTech, and Ken Graham, @NWS -- Episode 1610: How GOES-U? podbean.com/ep/pb-b77wq-165e…
1
1
757
The new episode of Talking Space has it all: geomagnetic storms causing brilliant auroras in equatorial latitudes, Starliner valve causing both delays and controversy -- and more! Have a listen, won't you? talkingspaceonline.com/314
2
520
Worst-case health scenarios in space? We're discussing this and more on #TalkingSpace. Plus, we delve deep into the GEARS experiment. Don't miss this fascinating episode! talkingspaceonline.com/s16e3…
1
2
337
The Flight Test Readiness Review for @NASA’s @BoeingSpace Crew Flight Test mission to the @Space_Station has concluded. Teams are "go" for launch at 10:34pm ET May 6 from SLC-41. Tune in at 4:30pm ET for a media teleconference: go.nasa.gov/3UiLaWu
5
79
22
503
138,321
Talking Space retweeted
How to fuel a rocket in space.
27
91
7
1,643
137,031