Light travels at approximately 300,000 km per second. This website functions as a day calendar, showing the objects that a beam of light might pass by, when travelling from the sun, in a straight line, for one year (cats not included).

365.25

Our light particles have now travelled for a Julian year (365.25 days) and are not even close to reaching the nearest star. The Crab supernova remnant is about 4,000 years away; the Milky Way Galaxy would take 150,000 years to cross; the Andromeda Galaxy is 2.3 million light-years away. Light will have to travel for another 28 billion years to reach the edge of the visible universe.