Yes. M51 (Messier 51) aka Whirlpool galaxy are the same thing.
The M51 is better known as the whirlpool galaxy.
The Whirlpool Galaxy (or M51), was discovered in 1774 by Charles Messier.
The Whirlpool Galaxy (aka M51) has a companion galaxy called NGC 5195, which has been passing behind (from our view) M51 for hundreds of millions of years.
The Sunflower Galaxy (M63 galaxy) and the Whirlpool Galaxy (M51 galaxy).
The Whirlpool Galaxy or M51 can be found in the constellation Canes Venatici. It is approximately 23 million light years from us.See related link for a star map.
Here's one: White dwarf star. Here's another: Whirlpool galaxy (M51).
The Whirlpool Galaxy or M51 has a diameter of approximately 76,000 light years.
The Whirlpool Galaxy, also known as M51, is a spiral galaxy about 23 million light-years away. While it is known to have many stars, it is difficult to confirm the presence of planets within other galaxies due to the large distances involved. So, as of now, there is no confirmed information on planets in the Whirlpool Galaxy.
No telescope has been found on any galaxy
201,600.
within or on the edges of the spiral arms of the galaxy
Ionization nebulae in the galaxy M51 are predominantly located in the spiral arms of the galaxy. These regions are where massive, young stars are found, which emit high-energy ultraviolet radiation that ionizes the surrounding gas, creating the colorful nebulae. The ionization nebulae are often observed in regions of active star formation within the galaxy.