
r/space

Happy Aphelion day. Today the Earth is furthest from the Sun in 2026.
timeanddate.comWhat historical space mission photo hits you the hardest every time you see it?
There's something about old mission photography that stops me cold in a way modern images often don't. Maybe it's the limitations of the technology, or knowing what the crew went through to capture a single frame. Maybe it's just the sheer improbability that the image exists at all.
The Venera probes capturing data on the way down through Venus before being crushed. The Voyager team pointing the camera back for the Pale Blue Dot. Earthrise from Apollo 8, taken almost as an afterthought during a lunar orbit.
These images carry weight that goes beyond aesthetics. They represent the absolute edge of what humanity could do at a specific moment, and someone decided to point a camera anyway.
I've been going deep into NASA and ESA image archives lately and keep finding frames I'd never seen before from missions I thought I knew well. Some of them genuinely stopped me midscroll.
Curious what images hit people here the hardest. It doesn't have to be famous. Sometimes the obscure ones from a mission you barely remember reading about carry the most unexpected emotional weight. What's the one photo from space exploration history you keep coming back to, and why does it stay with you?
James Webb telescope may have discovered a ... never-before-seen [molecule] on Pluto and Titan
livescience.comWhat would happen if there was a planet of pure water?
If you could somehow create a planet that was made of nothing but liquid water in the habitable zone of a star, what would it look like? Would it behave like a gas giant with a vaporous atmosphere above a liquid ocean? Would it even be able to sustain itself without being evaporated by solar wind? Would the entire planet act as a super-powerful perpetual tsunami?
Edit: This is just a thought experiment. Obviously a body like this would never form.
Milky way core in La Palma
Stacked/Blended/Tracked
https://www.instagram.com/flory.ro?igsh=b3Y4ZTU3Nmk0cTBt&utm\_source=qr
I was looking for a Tajinaste, one of the iconic symbols of the Canary Islands, and I was lucky enough to find it beneath the famous Mirador de Los Andenes. In front of me, a volcanic landscape rises above a sea of clouds that gently blankets the villages below, while one of the most breathtaking night skies in the Canary Islands unfolds overhead.
• Sky: Canon R + Canon 6D | 3-panel panorama | 120s | f/2.8 | ISO 1600
Ha 6x120 s| f/2.8| ISO 3200
• Foreground: 180s | 1/2.8 | ISO 3200
Violent Vela Supernova Remnant
This was taken from the Kagga Kamma Remote Observatory and is a small section of a larger 21-panel mosaic that I did in collaboration with my friends Dave and Chris. I recommend checking out the better resolution image on Astrobin: https://app.astrobin.com/i/pdxs0b
Some additional info on my website: https://www.naztronomy.com/gallery/image/900/vela_supernova_subsection_filaments
This is actually a mosaic itself, sections of 5 different panels totaling about 30 hours of data (if my math is correct). We wanted to get more data but due but Vela is setting faster and faster and the weather in the winter has been getting poorer. Hope to retry next year in mono!
Here is the equipment list:
- Telescope: Askar SQA85
- Camera: QHYCCD QHY268 Pro C
- Mount: Proxisky UMi 20S
- Filter: Antlia ALP-T Dual Band 5nm 2"
- Software: NINA, PixInsight, Siril (mosaic processed using my OSC PP script)
I've been going back and forth on the color, I think I want to do the whole 21 panel mosaic a little differently but wanted to show off this section of Vela.
If anyone's interested, I interviewed the observatory owners here: https://youtu.be/xgea5UQlhY4
I captured Andromeda galaxy by my phone camera,Outside my tent.
What should actually be preserved when the ISS is deorbited, and does any of it survive reentry?
With the ISS deorbit window closing in on 2030, I keep coming back to a question that feels underexplored: what does preservation even mean for a structure that was never designed to come home?
The obvious answer is documentation, digital archives, telemetry records. But that feels incomplete. Some of the hardware up there represents genuinely irreplaceable operational history. Canadarm2 alone has logged over two decades of robotic assembly and repair work in a radiation and vacuum environment no ground simulation can fully replicate. The materials science data embedded in those components after that kind of exposure seems worth recovering if any of it is structurally viable for return.
On the reentry side, the current plan targets a remote ocean corridor, and realistically most of the station burns or fragments on the way down. A handful of dense components are expected to survive impact. There's something strange about the fact that the most historically significant orbital laboratory humanity has ever operated will partly end up on the Pacific seafloor with no retrieval plan.
Is there a realistic case for a partial salvage mission before deorbit, even for select modules? Or is the engineering and cost barrier so high that documentation really is the only practical path? Curious what people here think about the tradeoffs.
I photographed the mineral Moon from Kyiv 30 minutes before missiles and drones hit the city.
Venus visible from Texas. Shot on Iphone SE (3rd Generation)
It's not a professional grade photo but i think you guys would appreciate it in a way.
It's easily the most noticeable thing in the night sky besides the moon.
Tianwen-2 probe returns first images of asteroid/quasi-moon Kamoʻoalewa
xinhuanet.comI built a highly efficient black hole simulation that runs in your browser.
Hello, I'm a cs + physics major and I built a site that can run a realistic black hole simulation efficiently in your browser.
Physics Specs
- Ray traces photon paths using Schwarzschild null geodesic equations to simulate gravitational lensing around the black hole.
- Models the event horizon, black hole shadow, and photon ring.
- Renders a lensed accretion disk with warped primary and secondary images.
- Simulates gravitational redshift, blueshift, and relativistic brightness changes
Tech Specs:
- Uses GPU fragment shaders for per-pixel ray tracing in WebGL2
- Major optimization: precomputed geodesic lookup tables replace expensive real-time physics solves.
- Procedural accretion disk: the shader ray-traces lensed disk intersections, then generates animated plasma, turbulence, color temperature, rim glow, and bloom.
live simulation: https://blackholesimulation.web.app
github: https://github.com/MaxwellFung/blackhole_simulation
**Run in Chrome for best performance. Also ik there's no sound in space it's an artistic choice.
Sharing my educational CME tool for visualizing coronal mass ejection events in real-time
I shared this over on r/spaceweather a little while ago and the response was overwhelmingly positive, so I thought some people here might enjoy it too.
I’m a software engineer and space weather enthusiast, and over the past few months I’ve been building an interactive visualization of coronal mass ejections as a passion project. The goal wasn’t to build another forecast site, but to make it easier to understand what’s actually happening between the Sun and the planets.
It uses real NASA and NOAA data to visualize CMEs moving through the inner solar system, along with the planets and the spacecraft that observe them. I recently added an Events section where you can replay historic storms like the Carrington Event, the 2012 Carrington-class near miss, and the 2024 Gannon Storm.
I put a lot of work into making the science as accurate as I could while keeping it approachable for anyone who’s just curious about space weather.
If you check it out, I’d genuinely love feedback, especially if you spot something that could be improved or explained better.
O que é isto?? Dúvida de um amador.
Sou completamente iniciante no assunto de astronomia, mas estava deitado aqui em casa e há uma pequena brecha para o céu. Acabei observando um ponto luminoso isolado no céu, ao passar um tempo observando realmente me pergunto o que é isso?
Pela câmera do celular não consigo captar bem.
A olho nu parece ter luzes piscando, mas tenho certeza de que não é um avião pois está a muito tempo no mesmo local e muito menos uma torre de sinal pois é muito alto. Como sou amador no assunto fico me perguntando se uma estrela/planeta fica "piscando" a olho nu. Outro detalhe que posso acrescentar é que após cerca de 10 minutos observando vejo que há momentos em que a luz emitida é muito mais forte e outros momentos bem mais fraca. Alguém poderia me ajudar a saber o que é isso?
Waning Gibbous Moon, Rising on 4th of July. As seen in Southern California.
Single exposure image unedited. M6 ii and 100-300mm at 100mm.
What moment in uncrewed space exploration genuinely gave you chills for the first time?
For me personally, it was learning about the Pale Blue Dot image. Not just the photo itself but the deliberate decision to turn Voyager 1 around and take it. That felt like a very human thing to do in the middle of a scientific mission.
I'm curious what moments hit other people the same way. Was it something recent like JWST's first images, or something older you stumbled across?
1981 : India Space Agency, ISRO Scientists Carry India's First Communication APPLE Satellite On Bullock Cart, the use of a bullock cart was not for general transport, but to provide a non-magnetic environment for conducting essential antenna characterization tests in an open field
I designed a watch inspired by the Overview Effect, and Apollo 17
Hey r/space!
A good friend of mine told me to share my latest design here. I’m Matt - a watch designer by day, and space nerd by night.
Space exploration and watchmaking has always gone hand in hand, from Scott Carpenters Breitling Cosmonaut as one of the earliest watches in space, to the iconic Omega Speedmaster worn on the moon during Apollo 11.
Having always wanted a Speedmaster, but without the funds to justify one, I set about creating my own space themed watch.
Whilst watching a documentary about the overview effect, I was inspired to create a watch that focuses on Earth. I chose the Blue Marble photograph from Apollo 17 as a starting point, imagining myself looking out the window at our Earth. After some testing, I was able to find the right materials to create a transparent disc that shows the Earth as the seconds hand, orbiting around the subdial.
As a slight nod to my favourite movie, the dial and markers were inspired by the millennium falcon cockpit.
I’d love to get your thoughts if you have time, how did I do with this design? Do you have any feedback?
I’d love your honest opinion, as I’m at a bit of a crossroads. The watch market hasn’t taken to this design as well as my previous designs, and I’m deciding between doubling down on this, or to shelve it after this production run and move in a different direction.
Thank you!
Matt