They don't - new born stars and planets are formed together.
What is the reason that life is less likely on the outermost planets compared to the innermost planets
The gravitational pull from the sun. God put them there.
Who says they don't?There are only four terrestrial planets we have pictures of where they're more than a single pixel (if that). We don't know if extrasolar terrestrial planets have rings or not. There's no theoretical reason they COULDN'T have rings.
the reason you can see the planets in our solar system is because, they reflect the suns light off of their atmosphere or sufrace.
They don't - new born stars and planets are formed together.
What is the reason that life is less likely on the outermost planets compared to the innermost planets
The outer planets are gas planets
Heat for all the planets and the main reason for the orbits of the planets.
there isn't actually a reason for "what are planets for" but they might be for life forms. planets are not for anything really, they just got made by gravity.
When you are 89, a reason for dying is not relevant.
No, a planetary nebula is not surrounded by planets. It is an expanding shell of glowing gas ejected by a dying star, which is usually located in the center. The term "planetary" is a historical misnomer as these nebulae have nothing to do with planets.
They were being systematically killed by the Nazis.
Other planets appear shiny from Earth for the same reason the moon does, we see the other planets' reflected sunlight.
It is half the reason, at least. Gravity is the force pulling the planets towards the sun, but they also have a velocity working perpendicular to it. With the velocity alone, the planets would fly off into space. With gravity alone, the planets would be pulled into the sun.
i think ptolemy
It is due to the conservation of momentum.