Sorcerer writes:

Magnificent Universe writes:

Suppose Pluto had the same orbit around the Sun as Mars. When closest to
Earth, how bright would Pluto be?

A. Pluto would still be so faint that you'd need a telescope to see it.

B. Pluto would be bright enough to see through binoculars, but not with the
naked eye.

C. Pluto would be one of the brightest objects in the sky, outshining every
star except the Sun.

Simple: C.

Pluto's absolute magnitude is only 0.7 mag fainter than Mars' absolute
magnitude, so Pluto would be only 0.7 mag fainter than Mars when in the
same location in the Solar System. During Mars' perihelic opposition
three years ago, it reached an apparent magnitude of -2.9, so Pluto
would be -2.2, brighter than Sirius (about twice as bright).

So?

By the way, the Sun isn't a star: it's a dwarf star. It's the new
IAU nomenclature; a dwarf something is no longer a something. I
wonder when the AKC will declare that toy poodles are no longer
poodles?

When puddles are dorsets, of course. Poole is in Dorset.

Non sequitur. I said nothing about puddles, dorsets, or Poole.