Skip to main content

How can I keep something in space once in space?


Let's say you just launched something into space, with your amazing space launch system, wait, that's NASA's new rocket, SLS, if you didn't understand that joke then you clearly aren't educated about NASA. That was a joke too, by the way.





Now, your payload that you sent on your launch vehicle is in space, coasting upwards, but then it starts falling back down after it reaches its apogee, aka highest point away from earth. This is due to Earth's gravity pulling the object back towards it. To stay in space, you will need to achieve orbital velocity, which is the speed requited to get in orbit. For Earth, which is probably where you are, the orbital velocity is around 7,500 miles per hour, or around 3,355 meters per second. To achieve orbital velocity, it requires a lot of energy, this can be achieved with either solid or liquid fuel, either one works, and usually requires multiple stages on a rocket.





When you are not in orbit, but in space, you are either not orbiting anything or you are on a suborbital trajectory. A suborbital trajectory is like orbit, except while you are happily coasting in space around Earth, you will slowly get lower and lower and re enter the atmosphere, due to your velocity not being high enough.





Great! You are in a stable low earth orbit now, is that all? No, that is not all jimmy. You need to make sure that you are always in a stable low earth orbit, because while you are orbiting Earth, Earth's gravity will always be pulling on you, causing your orbit to lower over time. Because of this, if your orbit gets to low, you will be put on a suborbital trajectory, scheduled to violently re enter Earth's atmosphere making temperatures rise up to somewhere near 5,000 degrees F. Okay, now your payload is in a pretty much permanent stable orbit, as you created a reaction control system to raise the orbit whenever it detects that it gets lower. Your power will also run out on your payloads computer eventually, so you probably want a pack of decent batteries with some solar panels.





When you are in space, the temperature is very low, around -400 degrees F, so you want to use materials that can withstand that temperature, like aluminum, titanium, and more. When you want to de orbit your satellite/payload, you will need to fire your thrusters retrograde, meaning the opposite way which you are headed to.





Instead of doing all of this, you could have just bought a ride for your payload on another rocket owned by SpaceX, Rocket Lab, and more, but yeah still, congratulations.


Popular posts from this blog

Starship SN10 Aborts at T - 0 Seconds for its 10km test flight.

  Moments ago, Starship SN10 attempted a flight to 10km, to then orient itself into a unique horizontal bellyflop position, flip itself upright after it has descended to about 1km, deploy the landing legs, and touch down on the landing pad softly. This vehicle, Starship Number 10, uses Liquid CH4 (methane) and Liquid Oxygen aka LOX/LO2, used by its 3 powerful Raptor engines.  Today, SpaceX started their official stream for the Starship SN10 Flight. SpaceX have privated the stream replay, so we cannot replay it. In case you want the link:  https://www.youtube.com/watch?v=DDEgFsefrGw&t=541s The vehicle began fueling up with Methane and LOX, and then shortly after, it started the engine chill process, which is the process of chilling the engines down in preparation for engine ignition, so the engine material does not crack or get damaged from sudden shock. The vehicle attempted to start up its 3 Raptor engines, by opening the fuel & oxidizer valves, starting up the turbopumps, sho

What is “the best” programming language?

Programming languages, there are so many of them. Some programming languages are way easier to learn than other ones. But which programming language, is “the best” programming language? This question, it is not really answerable. There is no “best programming languages”, they are all meant for different things, well, MOST of them. If I were to compare 2 different programming languages, meant for very similar things, like Batch and Bash, I would say Batch is easier, as its Syntax is not as confusing as Bash’s to the average person. Here is another example, C# is primarily used for computer applications, mostly on Windows, and HTML is a markup language, being used to make websites. I cannot compare C# (it is pronounced “See Sharp” if you didn’t know) because they are used for completely different things. It wouldn’t make sense to say, “C# is way better”, because what is it better at? Developing desktop applications? Sure! Then I can say HTML is better at making websites, it is not a logi

How do you know the universe was not created a few minutes ago?

       The universe is the giant area of space that we live in, which is observable. Anything past our universal border is not in our universe. People do say the universe is constantly expanding, but there is no proof of that, as the "imaginary" or, maybe not imaginary border at the "end" of our universe. But, how do you know that the universe even exists? Were you even in it last week? Did last week even exist? Last week, the universe could have been created, and you do not have proof against it. All of your knowledge and memory could have easily popped into existence a few seconds ago, tricking you into thinking you have existed for longer than you think. This is likely, but also unlikely, it is a 50/50 chance. A reason that this is unlikely is, there are a lot of things that do not make sense in our universe. Like, why does matter attract matter, resulting in gravity? This exists in our universe, but can it exist in a different universe? Not really, or most likel