Final answer:
It is true that a solar sail craft can be propelled using just particles within the solar wind. This concept utilizes radiation pressure and does not require traditional rocket fuel, allowing for innovative space travel.
Step-by-step explanation:
The statement in question asks whether it is true or false that a solar sail craft can be propelled using just particles within the solar wind. The answer is true. A solar sail craft operates by using a large, reflective sail to capture the momentum of light from the sun or other stars, as well as particles like protons and electrons that make up the solar wind. This propulsion method doesn't require any fuel once deployed in space, utilizing the physics of radiation pressure to push the craft through space. The force exerted by sunlight is indeed sufficient to propel a spacecraft, though the acceleration is gradual and builds up to high speeds over time. This innovative concept allows for the possibility of long-duration space travel without the need for traditional rocket fuel.