The discovery of the Milky Way is credited to the ancient Greek philosopher Democritus, who was the first person in recorded history to make the assumption that the Milky Way existed and was made up of billions of distant stars.
a
Most planets that have been discovered are in the Milky Way
he discovered it on
gallilao
In another Galaxy
Gallileo Galilei A+
Gallileo Galilei A+
All of the 1000 or so planets discovered so far, or most of them, are inside the Milky Way.
More than 1,100 open clusters have been discovered within the Milky Way Galaxy and many more are thought to exist.
Population II stars are the oldest in our Milky Way. Population III stars were the first stars in the Universe, but have yet to be discovered. See related question
Yes. There have been hundreds of planets discovered in other stars in the Milky Way. It has been estimated that the Milky Way likely contains hundreds of billions of planets.
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