That would be roughly 16minutes 40seconds .
It takes about 997.186 seconds for light to travel across the diameter of Earth's orbit.
The Earths diameter is about 12756.2 km. This equates to 1.3483602 × 10-9 light years or better still, 0.04 light seconds!!
Approx 100000 to 180000 years.
about 16 minutes and 40 seconds
At the speed of light of 3.00 x 108 m s-1, it would take light 4.64 seconds to transit the diameter of the Sun, which is 1.932 x 109 m.
It can travel across the vacuum of space.
Approximately 100,000 light years across.
Depending on the type of nebula, they can range from a light year across to over a 100 light years in diameter.
The Milky Way is about 100,000 light years in diameter and about 1000 light years thick.
Depending on the type of nebula, they can range from a light year across to over a 100 light years in diameter.
The most recent measurements put the diameter of Andromeda Galaxy at 141,000 light-years across. The Milky Way is estimated to be 100,000 light-years across.
That depends what you choose to include. The Oort cloud is estimated to be about a light-year from thet Sun - so the diameter ("across") would be about two light-years.