Space travel has used many unique forms of propulsion, such as solid fuel rockets, liquid fuel rockets, ionic thrusters, etc. The newest type is still debated as to whether or not it is even possible. The EMDrive seems to break the laws of physics, as it outputs more energy than it takes in. The inventor sent a prototype to NASA to be tested to confirm his claims, and their tests confirmed it. This whole concept has yet to be accepted, as it is such an outlandish thing, but it is currently being put through peer review. The implications of such a technology would make it incredibly easy for space travel, as we could have an essentially unlimited fuel source. This means that we can send out a very small probe with a rather large engine, providing lots of thrust without the need for a large fuel operation to go alongside it. This allows for the probe to accelerate faster, making maneuvers easier and allowing faster space travel overall. It is not yet known how much this would allow us to speed up space travel, but it isn't a "hyperdrive" or "warpdrive" by any means. That doesn't mean it wouldn't be revolutionary for space travel however, because being able to travel without the concern of fuel would expand the world of possibilities for space exploration greatly. But it is still likely just a fluke, and we have yet to figure out exactly why this EMDrive appears to output more than it takes in, seeing as nobody understands quite yet. It has been a topic of debate for 20 years now, and even still there have been no real updates on the situation, so it is highly likely the EMDrive will amount to nothing, but that is stopping nobody from imagining it's possibilities.