In order which objects are the largest black holes clusters of galaxies comets galaxies globular clusters meteorites minor planets moons planetary nebulae planets pulsars quasars stars supernova remn?

Answer 1

Your question can not be answered exactly as it is asked. Many of the things in the universe come in various sizes. There are Galaxies and there are Super Galaxies. Super Galaxies can be bigger than clusters of galaxies. Planets and Moons come in all kinds of sizes. Some moons are the size of some minor and/or regular planets... such as Ganymede, and Titan for example. Both are larger than Mercury, and the minor planet Pluto. Pulsars are the remnants of a dying star, stars, meteors, and every thing you have asked about come in various sizes as well. I would recommend that you find and watch "The Universe" which I believe is on the Discovery Channel. There is an episode that deals with the largest things in the Universe. According to that source... the largest thing in the Universe is the "Cosmic Web". This show will deal with pretty much everything you have on your list. It is a very interesting show, and it repeats regularly.