The amazon rainforest remains largely unnexplored. In 2014 a new species of river dolphin was discovered there.
There is still many uncontacted tribes living deep in the forest.

If one made a scale model of the galaxy in wich the earth had a 6 cm diameter, the sun whould have a 6,3 m diameter and be about 713.432 m away.

A model of our galaxy at this scale whould be roughly the size of the orbit of neptune, wich is about 30 times as far from the sun as the earth.

the milky way has aproximately 100 billion stars, each aproximatly having at least one planet.