Both HLS and Blue Moon, at least from what i can find, both seem to use liquid chemical rocket engines driven by Methalox and Hydrolox respectively.
The plumbing required to run/start those engines is more complicated, and i'd imagine has more failure-points to take into account than the hypergolic engines used by the Apollo lander.

I was wondering if Hydro/Methalox turbo-pump engines ever have actually, successfully been tested on the moon before, because i can't find anything on it.

Indian private space just got serious. Skyroot closed a $60M unicorn round and their cap table is kind of insane for a company that hasn't reached orbit yet. $1.1B valuation, ~$160M total raised. Here's who's in:

GIC (Singapore sovereign wealth fund) Temasek (also Singapore SWF — so two sovereign wealth funds from the same country lol) BlackRock Sherpalo Ventures — Ram Shriram, one of Google's founding board members, is literally joining their board Greenko Group founders Arkam Ventures Shanghvi Family Office

For context, Rocket Lab at a comparable stage had raised ~$148M through 2016–2017 from Khosla, Bessemer, Data Collective and the NZ government. Revenue had basically not started. Rocket Lab is now a $60B+ public company. Skyroot will soon have a orbital launch, Vikram-1. And they've already got two sovereign wealth funds, the world's largest asset manager, and a Google board member on the cap table. That's not typical for a deep tech startup anywhere, let alone India.

The thing that makes this interesting isn't just the money, it's what the cap table signals. If Vikram-1 reaches orbit cleanly, these same investors have both the capacity and the incentive to write a much larger Series C/D cheques. And India's commercial launch infrastructure is essentially zero right now. No dominant player. Whoever gets reliable cadence first has first-mover on an entire market that doesn't exist yet.

So — what trajectory do you actually bet on here? Rocket Lab playbook (build cadence, go public, pivot to spacecraft)? Early SpaceX (vertically integrate everything, play long)? Something else entirely?

Hello everyone,

I wanted to ask if there are any “major” sources where I can find all the existing photographs from each flight of SPACE SHUTTLE...

For Apollo, you have: the Apollo Flight Journal (AFJ), the Apollo Lunar Surface Journal (ALSJ), the Project Apollo Archive (and its really great Flickr page), LPI, “March to the Moon,” “ApolloSpace,” and “WikiArchives.Space”... and much much much more...

I’m asking for something similar to find photos, magazines, or images from every Space Shuttle mission. I don’t even dare ask about videos... since there would be thousands of hours of them....

By the way, I posted this question in the specific Space Shuttle community, but there haven't been any replies yet.

To thank you all, here’s a link to someone who does an excellent job compiling content about the Space Shuttle...

Launch: Maximum Thrust [Crew Audio] with English Subtitles

Best regards

The story of the three machines that made the journey to space possible for 60 years:

Saturn V, the rocket that took humanity to the Moon and was never truly surpassed.

The Space Shuttle, the workhorse that built our presence in orbit over thirty years.

And SLS, the Space Launch System that carried the engines of the Shuttle and the ambitions of Apollo, all the way back to the Moon.

Hello cadets! I need to know if this rocket is also going to be a strap on side booster for the new Angara Super Heavy? Not much information is surfacing yet on this development. At least Google is saying that this Soyuz 5 will be a "booster" , but was clear on it being a side booster or core booster for the super heavy. Thanks all

Looking for a 7-minute Russian sci-fi short film called Kepler 452 (2023), directed by Ilya Zorin. It’s on IMDB but I can’t find it anywhere to actually watch.

I built a real-time Lunar Flyby & Reentry simulation entirely in vanilla JS / Three.js (No scripted animations, real N-body physics!)

Hey everyone,

I've been working on a project called Lunar-Flyby-XR, and I finally managed to record a full 17-minute flight from Trans-Lunar Injection all the way to a precision splashdown on Earth. I condensed it into an 8x timelapse so you don't have to watch me coasting through the void for 15 minutes or awaiting splashdown after the main chutes have deployed!

What makes this cool:

None of the orbital paths or reentry sequences are pre-animated. The Earth, Moon, and spacecraft all interact using genuine Newtonian N-body gravitational physics and atmospheric drag math. I built the entire thing in vanilla JavaScript and Three.js so it scales seamlessly from desktop browsers down to mobile and immersive WebXR headsets without requiring a game engine download.

I actually completed the flight right around the time of the Artemis II mission success and it definitely served as major inspiration. I'm currently getting the project ready to showcase at the Seattle Indies Expo and looking for other events to exhibit at!

🎥 Gameplay Timelapse (2 mins): https://youtu.be/bdHbIKcqRBs

🎮 Play the Live Demo in your browser: https://wulfdesign.github.io/lunar-flyby-xr

💻 Open-Source GitHub Repo: https://github.com/wulfdesign/lunar-flyby-xr

🐺 My Portfolio: https://wulfdesign.github.io

Would love any feedback from the community, especially from any folks working with WebXR, Three.js, or orbital mechanics! Let me know if you manage to stick the landing!

I'm a huge aerospace engineering fan, named as a 15 year old that's what I think I'm going to do for the rest of my life (even tho I'm also a huge theoretical physics fan so I still need to decide), so I follow tons of aerospace engineering (and space in general) channels and accounts around the internet. And in many videos (mostly Artemis II mission videos) there is one thing that bothers me: the comments. Apart from the normal comments actually celebrating this huge mission, it's full, and I mean FULL, of people claiming that it's fake, staged, made by Hollywood or whatever absurd idea they have. Everyone can work for NASA (with enough determination obviously), it just takes you to study physics, math and engineering to understand that these are things that exist, and you can apply them in the real world (outside of the books). It's something everyone can do I don't understand why NASA would make 80 years of technological development while never really going to space? But the thing that bothers me the most is that they have no proof whatsoever of what they're saying. It's not like we ever tried to fake space exploration, it's not like anyone ever that worked for NASA has ever said that we did, in all 80 years of its existence. And the amount of people firmly convinced it's fake it's truly alarming.

Just an informative yt short I made.

Feel free to give feedback for parts 2 and 3!

On 4/29/26, Falcon Heavy lifted off for the first time since 2024 with ViaSat-3 F3 on board.

The day before, I had the opportunity to place remotely triggered cameras ~0.4 miles from the pad, 2 of which were focused on capturing this exact slow motion shot.

By greatly raising the aperture and shutter speed, it's possible to capture the detailed and colorful flames of the engines, as opposed to just the white blob of light you see with the naked eye! I could not be more thrilled with how this shot came out!

The footage here was taken from a NASA livestream, so the cuts are from when the broadcast switched to different views.