How can I explain how the light and heat from the single sun in this universe is able to reach so far? Is it a question of the receptivity of different planets?

Expressions researched:
"How can I explain how the light and heat from the single sun in this universe is able to reach so far? Is it a question of the receptivity of different planets"

1969 Correspondence

We can see one sun only. So it is simply speculation whether there is one or more suns. But we get from authority of Sastra that there is one sun, in each universe, and the stars and moon reflects the light of this sun. There is one sun in the daytime, and it illuminates so nicely that all darkness is gone. But at night, you may argue, if these stars are so many suns, then why the darkness is still there??

Letter to Rupanuga -- Hawaii 14 March, 1969:

Your eighth, "How can I explain how the light and heat from the single sun in this universe is able to reach so far? Is it a question of the receptivity of different planets?" We can see one sun only. So it is simply speculation whether there is one or more suns. But we get from authority of Sastra that there is one sun, in each universe, and the stars and moon reflects the light of this sun. There is one sun in the daytime, and it illuminates so nicely that all darkness is gone. But at night, you may argue, if these stars are so many suns, then why the darkness is still there??