The universe is the biggest miracle in itself. We are such a small part of the universe that it is really mind boggling. We have been looking at the sky and wondering about the universe probably through our history as humans. Slowly we’ve found that planets revolve around stars and stars too revolve around other massive objects in the sky. A galaxy is a group of stars, planets and interstellar material that are revolving around a galactic center. There are billions of galaxies in the universe and they interact with each other under the force of gravity. Smaller galaxies collide into larger ones to form even larger and more crowded galaxies.
Triangulum Galaxy is part of the Triangulum constellation and is located 3 million light years away from earth. This spiral galaxy is the third largest object in the local group of galaxies in which our own Milky Way lives as well. It is the most distant permanent object that can be seen with the naked eye.
The Whirlpool Galaxy is a grand design spiral galaxy in the constellation Canes Venatici. It is 23 million light years from Milky Way and is a massive object in the universe. It is quite popular with astronomers both amateur and professional as it can be seen even with a binoculars and is easy to find. It’s mass is estimated to be equal to about 160 billion suns.
Milky Way Galaxy is our home in the infinite universe. Remember that if you ever get lost in space. It is also one of the larger galaxies that have been observed so far. It contains about 100 billion to 400 billion stars and about as many planets. In 3.75 billion years Milky Way and Andromeda will collide to form a super galaxy.
Andromeda Galaxy is the nearest spiral galaxy to the Milky Way and is our partner in the universe. It appears in the constellation Andromeda and is about 2.5 million light years from earth. Its mass is estimated to be around 710 billion solar masses. It is slightly larger than our own Milky Way galaxy.
Located 212 million light years away in the constellation Pavo, Condor Galaxy or NGC 6872, forms along with IC 4970 part of two interacting galaxies. It is famous for being the largest observed spiral galaxy in the universe. Its size is 522,000 light years from one tip to another.
ISOHDFS 27 is the most massive spiral galaxy known so far to us humans. It is located about 6 billion light years from Earth. Its mass is about 4 times the mass of the Milky Way. The mass of this galaxy has been estimated to be around 1040 billion solar masses.
IC 1101 is a supergiant elliptical galaxy at the center of Abell 2029 cluster. It is located in the constellation Virgo and is classified as a cD class of galaxy. It is about 1.07 billion light years away. Its diameter is about 6 million light years which makes it the largest galaxy in terms of breadth. It contains about 100 trillion stars.
ESO 146-5 is a group of giant elliptical interacting galaxies in the center of the Abell 3827 cluster. This group is located 1.4 billion light years from earth. The mass has been calculated to be 30 quadrillion solar masses which makes it the most massive galaxy in the known universe. It is famous for the strong gravitational lensing effect.
M60-UCD1 stands above all in the list of most crowded galaxies ever observed. It is a dwarf galaxy and not very large but it is the most densely packed galaxy ever. It is located 54 million light years from earth. Its mass is about 200 million solar masses. Half of this mass is located in a central sphere of 160 light years diameter.