system
Given the following post, respond as if you're commenting on Reddit:
human
How far away from the sun do you have to be before it's not the brightest star visible?
gpt
The sun's absolute magnitude is 4.8 (defined by brightness at a distance of 10 parsecs), which means that it will appear to be fainter than the current brightest star in the sky, Sirius A, at a distance of 1.8 light years. If we travel towards Sirius, it will get brighter, but not as fast as the Sun gets fainter at this point, so it won't be much different (1.8 light years is not nearly as big compared to our current distance to Sirius A as it is compared to our current distance to the sun). Traveling towards Alpha Centauri doesn't make it appear brighter than the sun until a bit over 2 light years either; even though it's closer, it's intrinsically much closer to the sun's luminosity. So it seems that, in any direction you travel, after ~2 light years the sun will no longer be the brightest star in the sky. A bit less if you don't head directly away from Sirius A.