The problem :
Deep space exploration further than the vastness of space is not yet possible due to limitations in the propulsion technology currently available. Based on our current understanding of physics and the limits of the natural world, sadly it is not possible for us to travel at light speed. So, light-speed travel and faster-than-light travel are physical impossibilities, especially for anything with mass, such as spacecraft and humans.

c#
unity software
We used planetary data system for informatiion gathering to our virtual universe.
We relied on rockets properties and their actual designs avaible on NASA's official website.
In order to envisage the feasibility of interstellar travel, we decided to create a game that allows users to travel to well-known points in the universe by selecting and upgrading propulsion technologies. The critical point is the distance.
While traveling through the universe we will notice that the greatness of the universe, like if we are trying to describe the distance between earth and sun numbers quickly escalates to millions of kilometers, then astronomical units come in to play but when we start to talk about traveling between galaxies numbers of au units go to millions then light year comes in.
Our application will demonstrate the feasibility of orbital to interstellar travel with different technologies. Moreover, it generates galaxies according to the supplied information like if information points that the galaxy is spiral, generated galaxy will take a spiral shape in our game.
We have indexed nearly five thousand star and exoplanet locations in our game. Also, we can select and upgrade variety of propulsion technologies throughout our application. After reaching some propulsion technologies, you will notice that if you go faster than the speed of light your spacecraft will become invisible, its quiet similar to supersonic speeds but now you are becoming a real ninja who has no sound and light. After traveling through space faster than light you will eventually run out of our universe, which is complete darkness. If you go a little more after the last light has been reached to your spacecraft then reduce your spacecrafts speed to lower than speed of light, you will see something incredibly interesting, the big bang.
Users will be extremely excited to reach the higher levels of the game, because as the user's level is up, he will approcah to the speed of light.
[1] (online) https://space.nss.org/settlement/nasa//Nowicki/SPBI101.HTM
[2] (online) https://www.nasa.gov/audience/forstudents/5-8/features/nasa-knows/vehicles/index.html
[3] (online) https://en.wikipedia.org/wiki/Ion_thruster
[4] (online) https://www.grc.nasa.gov/WWW/K-12/BGP/Shari_N/propulsion_act.htm