To start, my world’s take on Hyperspace is a bit… strange. Let me explain how via a long, but relatively effective, profile on it:
Now, anyway, my question is this: is there any way for me to easily calculate how long it’d take a spacecraft going through hyperspace at a set speed to reach a set destination from a set starting point? I.e. is it possible to calculate how long it would take a spacecraft going Mach 20 in Hyperspace to get to Kepler-452b from Earth?Hyperspace is a realm of complicated nature which can be accessed from any other realm, yet which only exists as a wormhole-like void within the realm which it is accessed from. As such, accessing Hyperspace is often used as a means of superluminal travel, as Hyperspace allows the geography of other dimensions to be distorted to bring distant points closer to each other. When a spacecraft is sent into Hyperspace to reach a specific destination, traversal is typically merely a matter of traveling in the proper direction. However, it is worth noting that any spacecraft within Hyperspace cannot fully disappear from the realm it began in, or else it may become trapped in Hyperspace.
Most ships are manufactured to avoid this by, in the process of accessing Hyperspace, automatically replacing themselves with an immaterial/invisible version of the hull, which serves to take the place of the ship and ensure the real ship has a safe ‘landing position’ when exiting hyperspace. Regardless, it is also worth noting that the copy is capable of harmlessly flying through planets at speeds many hundreds of times greater than light speed while the original, tangible ship travels at mere hypervelocity speeds within Hyperspace. On average, the tangible ship traveling at Mach 15 is accepted to correspond to between 250 and 255 times light speed.
The difference in speed is caused due to time dilation: as stated earlier, the end destination is closer to the starting location in Hyperspace than in the dimension Hyperspace is accessed from. Additionally, depending on the distance between the point of access and the end destination in the dimension Hyperspace was accessed from, the distance between the two points in space may be significantly different in hyperspace. This is because, as a destination’s distance from the point where hyperspace was accessed, its distance from the point of access will decrease by a factor of 1.625. Once the ship leaves Hyperspace, the two copies will recombine.