Our first interstellar spaceship

A1: My species, the Kenthorans shot lasers to speed up a solar sail to travel to the nearest star system after 25 years.

A2: Mine used an ion drive mixed with several gravitational assists and cryogenically preserved crew to reach our nearest star system in a 30 years.

H: We shot ourselves out of a giant cannon to get into orbit and then... We rode a trail of nukes behind us to get to reach Alpha Centauri in a 6 years.