All you need to do is, build a rocket with big wings and lower down the mass percentage in tweaking tab and from there just do a full thrust on launchpad and in a few seconds you go just a little too fast :)
Wings can cause mass-scaled craft to accelerate to ludicrous speeds very quickly
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Ovich
2.1 years ago
I made a light craft with small thin wings and it hit light speed before crashing into the continent next to the launch pad