* From Earth: We see the Sun as a bright, yellow disc in the sky. It's the closest star to us and appears relatively large.
* From other planets in our solar system: The Sun still appears as a bright star, but its apparent size diminishes as you move further away. For example, from Mars, the Sun would look about half the size it appears from Earth.
* From outside the solar system: From other star systems, the Sun would look like a faint star, almost indistinguishable from other stars. It would be difficult to spot without specialized telescopes.
So, to answer your question directly, the Sun can be seen from anywhere in the universe as long as there's a clear line of sight and enough light for it to be detected.
