* Light travels constantly: Light from the Sun reaches all the planets in our solar system, and it continues outwards into the vastness of space.
* The "edge" of the solar system: There's no clear-cut edge to our solar system. The Sun's influence, and therefore the reach of its light, weakens with distance, but it never truly stops.
* Beyond our solar system: Light travels to stars beyond our solar system, but the immense distances mean that light from the Sun is incredibly faint by the time it reaches other stars.
So, the answer depends on how you define "reach":
* Reaching all planets in our solar system: The Sun's light definitely reaches all the planets in our solar system.
* Reaching planets around other stars: Light from the Sun reaches other stars, but it's incredibly faint and unlikely to be noticeable.
* Reaching the edge of space: There is no true "edge" of space, so light continues outwards forever.
Let me know if you have another question about light or space!
