[A few hours later]
Once the Granian Lord understood the science behind the black hole firing mechanism, he and his assistants conducted several more tests to determine whether it would be safe to travel through it.
They also sought to observe firsthand the effects on a Granian body if it were pulled into the hole, and for that, they used the former High Grade's ship and allowed Gravax to be their "test dummy".
In a few hours, the Granians rebuilt the Ethisian ship and watched as Gravax took it for a test flight.
Inbuilt with a computing navigation system, the Granian flew the ship into space, away from the planet for his and everyone else's safety.
'Now, let's understand how this works.'
After spending more time understanding the navigation system, Gravax felt he was ready to fly into a black hole.
[Inter-Dimensional Rift Traveling System: ONLINE]
[Insert Coordinates]
'Since this is a test run, let's start simple. Start somewhere not too far from here.'
