Of course, this is all moot if hyperspace travel means the Raddus would have been in another dimension altogether - which some works in the Star Wars Expanded Universe (now “Legends”) seem to confirm. Part of judging whether Vice Admiral Holdo's gambit is credible depends on how we define hyperspace. Regardless of what speed the Raddus is traveling at when it collides with the Supremacy, Johnson says all of the energy the smaller ship carries with it is spent in cutting through the Supremacy - and some smaller star destroyers - and in completely demolishing the Raddus. At that point, there’s only slowing down: Laws of physics dictate that you can’t go faster than the speed of light.” Of course, he notes, the hyperdrive adds a little asterisk: Maybe you can go faster than the speed of light.
I would guess, based off of the way that it is depicted, that the Raddus is essentially at light speed by the time it makes contact. “Now presumably, that hyperdrive is exerting a force forward, pushing it forward, so there’s a thrust force and a resistance force from the Supremacy. “The moment the Raddus started to make contact, it would experience an extra force going backward,” says Johnson. Once the ships collide, though, Newton’s third law says that the Supremacy exerts an equal and opposite force against the Raddus. This is a massive amount of energy, which increases with every tiny increment closer to light speed that the Raddus accelerates. “The force involved in accelerating the Raddus to just 90 percent of the speed of light would be ~6.8 And since accelerating to the speed of light requires infinite energy, at least based on the way we understand jet propulsion, we’ll settle for a significant portion of light speed in this scenario. And then if the car is going fast enough and is solid enough, it could cut right through it in the way that Snoke’s ship is cut along the path went through.” It would take an awful lot of energy to get the starship going this fast, which Johnson has attempted to calculate for us.Įstimating the mass of the Raddus, assuming it’s 40 percent steel - or durasteel, more likely - and 60 percent air, Johnson tells us how much energy it would take to accelerate the ship. “At a higher speed, would really start to bow.
“At a slow speed, it would dent it,” he says. The Supremacy, a First Order Mega-class Star Dreadnought, is bigger than a city.Īs an example of this phenomenon, Johnson asks us to imagine something a little easier to picture: a car running into the side of an eighteen-wheeler truck.
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