Oxygen for some types of life. Liquid water for all life as we know it.
Temperatures that are not too extreme.
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Not necessarily! System with one sun (star) at its centre is called solar system. A solar system may have anything. Our solar system has, of course eight planets, asteriods, comets. But any other solar system in the cosmos may have different things,
It takes about 225 million years for the solar system to travel once around the Galaxy. Th solar system is about 4.6 thousand million years old. So a rough estimate would be 20 times.
ang churva mo!di mo pa alam 'yon
They are all gaseous planets with rings systems and many moons.
yes
None. Only the Earth notices the moon's existence.
About 12 sqmt. area is required to setup 1kWp Grid connected rooftop Solar system.
Earth has been a part of the solar system for its entire existence. It formed in roughly its current orbit about 4.58 billion years ago.
Sirius and the sun share a number of superficial characteristics, since they are both stars. But Sirius is not in the solar system.
Since we do not have any laws that indicate what a solar system should look like (as an example we know the normal / average / typical characteristics of a human) there is no basis to claim that a solar system is unusual.
It's not in any shape, form or characteristics.
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Solar system is around 4.568 billion years old. It came into existence little time after the Big Bang.
As long as the solar system has been around.
One of them is that is has a Greenhouse effect on it.
Compared to the gaseous planets in our solar system: yes.