The Andromeda Galaxy.
First and recently are mutually exclusive and cannot be answered
No planets have been officially recognised outside our galaxy, though more than 500 exoplanets have been identified outside our solar system. Our nearest galaxy is too far away to detect such planets, though we can assume that it will contain several millions of planets based on observations within our own galaxy.
It's fair to say that our own galaxy was discovered first.
Supermassive Galaxy
This would be the list in general, although there are probably moons somewhere in the universe that are larger than the earth. Earth's moon; the earth; the sun; the solar system; the galaxy; the universe.
First of all, it's a spiral galaxy, not an spiral galaxy. Second, a spiral galaxy would have a spiral shape, obviously.
That depends on what definition of first you mean. A solar system is in a galaxy and a galaxy is in space. So the solar system is smallest and space is largest.
The original Guardians of the Galaxy was printed in January of 1969.
The first phone manufactured under the Samsung Galaxy name was launched in June 2009.
Yes, with sensitive instrumentation, almost two thousand planets outside the solar system (exoplanets) have been discovered - and even the first ones in another galaxy. (Note, the human eye cannot see exoplanets unassisted).
Interacting galaxies are the first type of peculiar galaxies.
Halo.