Jason Nishiyama @evilscientistca@octodon.social

There is some debate over which object M102 is. It is likely that it is this object, NGC 5866, and most modern versions of Messier's catalogue give this object as M102.

Pluto was discovered by Clyde Tombaugh in 1930. It is so far away from the Sun that it hasn't completed an orbit since it's discovery, having only moved about 40% of it.

M47 is an open cluster located about 1600ly away in the constellation of Puppis.

M47 is a catalogue number (for the Messier catalogue). Like many objects, it is in many catalogues, for example it is also in the New General Catalog as NGC 2422.

NGC 2392 is a planetary nebula about 6500ly away in the constellation Gemini.
NGC 2392 was discovered by William Herschel in 1787.

Some ass threw a rock at my living room window last night. Damn vandals.

M67 is an open cluster located about 2700 ly away from Earth in the constellation Cancer.
As an open cluster it has been extensively studied in order to understand how stars evolve over time.

M84 (the galaxy at the extreme right-centre of this image) is a galaxy located about 55Mly away from Earth in the constellation Virgo.
Though generally classified as an elliptical galaxy, it may be a lenticular galaxy as it contains young stars suggesting low rate star formation.

M16, the Eagle Nebula, is a star formation region/emission nebula located about 5700 ly away in the constellation Serpens.

Looking closely at the image you can see the "Pillars of Creation" made famous by a Hubble image of the area. Stars are being born in these clouds.

M4 is a globular cluster located about 7.2kly away in the constellation Scorpius.

It is a ball of older stars that is orbiting our own Milky Way Galaxy.

M101 is a face on spiral galaxy located about 21 Mly away in the constellation Ursa Major. It's slightly asymmetrical appearance is likely due to gravitational interaction with nearby companion galaxies.

Comet C/2014 Q2 (Lovejoy) is a long period comet discovered in 2014. It will next be by in about 8000 years.

IC 434 is the red emission nebula that we see behind the Horsehead Nebula. In fact we can only see the Horsehead because it blocks out light from IC 434.

M58 is a barred spiral galaxy located between 62 Mly and 68 Mly away in the constellation of Virgo.
Barred spiral galaxies have a bar across their cores as visible with M58. The bar may be caused by a density wave near the core.

NGC 7293 or the Helix nebula is a planetary nebula located about 650 ly away in the constellation Aquarius.
As a planetary nebula it is the remnants of a star between 1 and 6 times the mass of the Sun as it's throwing off its outer layers on its way to become a white dwarf.

M75 is a globular cluster about 68kly from Earth in the constellation of Sagittarius. Made up of older stars, globular clusters like this allowed Harlow Shapley to determine the direction and distance to the centre of our Galaxy.

M65, right, is a galaxy located in the constellation Leo. Along with M66 (left) and NGC 3628 (not in image) forms the Leo Triplet group of galaxies.

M48 is an open cluster located about 2500ly away in the constellation Hydra.
Open clusters are important to astronomy as they allow us to work out how stars evolve through their lives.

M59 and M60 (the two brightest galaxies in this image) are members of the Virgo cluster of galaxies. Careful inspection of this image reveals at least 13 other galaxies (annotated second image).