[ausastronomer (John Bambury)]

Originally Posted by EpickCrom

Now that I think about it, a lot of planetary nebulae within our own galaxy are tiny, at intergalactic distances they would essentially be stellar! Thanks again and clear skies

You hit the nail on the head.

The Helix Nebula in Aquarius (NGC 7293) is one of the larger planetary nebula by apparent size at ~25' but it only spans 2.5 light years and is 650 light years distant.

The Tarantula Nebula (NGC 2070) in the LMC spans > 900 light years but because of the distance ~200,000 light years its apparent size is 40' x 25'.

Cheers
John B