What is a galaxy? Have your say
You may remember the story of Pluto. A few years back, as astronomers found more and more objects which blurred the line between planet, asteroid and other, it became apparent that the word “Planet” lacked a proper definition. So, after two weeks debate at the IAU General Assembly in Prague, a definition was voted in by over 400 delegates which happened to exclude the ex-planet Pluto. Now, as astronomers find more and more small galaxy-like objects, we find a similar problem with … Continue reading →
