NASA will use a safer fuel for humans

Here is the kicker: he is also more powerful. According to NASA, this safer fuel offers about 50% better performance. You can go further with the same fuel or reduce the amount of fuel needed to complete a given mission. This could be particularly useful for moon and Mars missions, where cargo space will be limited.

You will not have to wait long to see if the fuel works well. The GPIM should be launched in late June aboard the same Falcon Heavy rocket carrying LightSail 2. If it succeeds, it could make space flight safer overall, not to mention its effectiveness.