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Is it really fair to call Boeing a private company given their longstanding integration with the US military industrial complex? If you want a candidate - Rocket Lab for small satellites. Reusable, high launch cadence. Boeing also has a lot of interesting projects ( not military ) that can be made ...

Last of all, I`d like to say a few words about small but promising space company from Scotland and it`s called Skyrora. To be more accurate SKYRORA is new British/Ukraine Company for Small Satellite launcher. The main office is Based in Edinburgh, Scottland. They continue were Black Arrow was Stop, ...

Also, I`d like to mention Boing. It is the space company that worth to be mentioned too. This space aerospace manufactures engines for some spacecrafts and this compony had to take part in Artemis mission together with Space X and NASA

Space X by a wide margin. Why are you excluding the obvious answer? There are lots of private space companies that are worth to be paid attention to. For example, Blue Origin, it is a great private spacecompany. This company may be going slower than SpaceX, but their success to failure ratio is unm...

Nowadays, privatespacecompany really succeeded and manufactures pretty good technology and space vehicle. What do you think is themostadvancedprivatespacecompany ( except Space X ) at the present time?

Have you already seen the photo that has been taken by Ingenuity helicopter? The image has been taken on 17 feet above the ground and showes us Mars` rusty, red surface of Mars. https://hypebeast.com/2021/4/nasa-mars-ingenuity-helicopter-first-color-photo-reveal?utm_source=instagram&utm_medium=s...

What are the waste products from the plastic-waste to rocket fuel? We should also know what the carbon footprint of the conversion process is as well. Recycling can end up being worse than dumping in some cases if we're not careful about how we approach things. Yeah, that`s a good point. I don`t kn...

There is special type of sats that can do a lot of useful stuff for our environment. For example, I`d like to mention one of those type that can track rare species of animals to prevent them from being killed by poarchers. Using Satellites to Detect Elephants from Orbit is very useful and has a lot ...

Have you heard about a special type of microsatellites that can observe environmental changes like sea level or melting of glaciers? With the help of that technology, scientists can approach the solution how to avoid global warming. Moreover, there is even a special type of sats that can track rare ...

The great achievement has been made for the Perseverance mission and for whole space exploration area. Excellent work by NASA's scientists and engineers. I guess that this flight will help humans in futher Mars exploration and of course it will help in making the first crewed mission to the red planet

The rotor speed was approximately 5x what would have been needed to lift the same weight here on earth due to the low air pressure/density. They plan on using larger aircraft in the future to move scientific packages around but they will have to have correspondingly fast rotor speeds or larger rotor...

Additionally to the informatione about hybrid rocket, the avionics equipment can be physically tested the thermal protection coating as well as ononboard telementry components under flight conditions, while investigating Earth`s magnetic field.

Nope. Hybrid rockets got that moniker because their engine is set up to use both, liquid (usually the oxidizer component) and solid fuel components, other than solid fuel (usually used for boosters, fuel and oxidizer are bound in a solid compound) or liquid fuel engines (petrolx LOX, or Hydrogen an...

Actually, the hybrid rocket has beem got this term because it combines solid Hydroxyl Terminated Polybutadiene (HTPB) fuel and 90% Hydrogen Peroxide (H202) liquid oxidiser.

That makes ecosene fuel even more beneficial invention. The usage of plastic waste in that way would be more useful and beneficial as we have tons of it all arount the globe. To sum up it could be a great chance to clean the environment from plastic waste.

Have you ever heard about hybrid rockets? Some space company manufactures and uses this kind of rockets in small launches like delivering microsatellites in the orbit.this type of rocket is uncrewed and guided and is used for test in under microgravity conditions.

However, the alternative rocket fuel also called as a green fuel can be remade only from particular types of plastic.The following types of plastic can be converted into ecosene fuel: Polypropylene (PP).
Polyester (PE).
Polystyrene (PS) and their mixtures and analogs

The new green rocket fuel is better than kerosene. This new kind of rocket fuel has already been tested and the result of the test has shown that it`s 1% - 3% better than kerosene by its energy characteristics. But I am not sure if it`s possible to use the new rocket fuel in long space journeys.

Actually, I think that some forms of life can be found on Mars. You all may know there is water ( ice ) on Mars, so there is a possibility to find in that ice some forms of life or atleast some traces of life that existed on the red planet millions years ago

Sure, the probabilities of life emerging aren't known yet as we don't have a large enough sample size. But with life emerging here on Earth, it's bound to have emerged somewhere else. All we can say for sure is that we haven't detected it yet. But how far out into the universe can we look ? I've go...

One thing we need to ask is how plug and play this fuel is with existing engine designs. If it works with no, or very limited, changes it could be viable if it requires a redesign of even 20% of the system it'll be a complete non-starter. If it causes any extra fouling or wear on a reusable engine ...

LaCroix is 100% correct, the lengths rocketry goes to squeeze out deltaV, even 1% would be worth having more expensive fuel. Rocket fuel is a fairly edge case for kerosene though, so that alone won't encourage this technology to scale. It might become something a rocket company mostly just does for...

With over a hundred billion galaxies in the universe. It is hard for me to believe that there is not at least one other solar system with life. Especially, when some scientists claim that they have already found some exoplanets that can be like Earth.

TBH - in space travel terms, cost efficiency is not always the bar, and fuel cost is one of the least problematic things when trying to shift payload into orbit. I do remember that it costs 60 million total to launch the Falcon 9, but only 2-300k to fuel it. 1-3% more power is something that helps ...

The problem here is likely the same with as with all other plastic recycling, that it just isn't cost effective right now. While I don't know how much this costs, I am highly doubtful it will be as cheap as just buying kerosene on the open market. If we do see a carbon tax go into effect, this migh...