asserted that the Milky Way was filled with millions of inhabited worlds, thus defying Papal Decree. For this impiety he was burnt at the stake. The sun has 8 planets including the Earth and millions ...
The most common stars in the Milky Way may be even less friendly to ... stellar bodies smaller and less massive than the sun, may blast their planets with intense ultraviolet (UV) light radiation ...
The Milky Way is one of the biggest in the observable universe: Even if you traveled at the speed of light, it would take 100,000 years to go from one end of our home galaxy to the other.