Nobody knows. There is no evidence of it, so far.
Extraterrestrial life is defined as life that does not originate from Earth. Life on other planets is a simpler way to word it. Aliens on other planets is an example (but I doubt aliens live on other planets) of extraterrestrial life. Also, bacteria are another example. There is proof that there was once water on Mars, and that there may have been bacteria living in that water. That bacteria would also be considered as extraterrestrial.
Yes there is small bacteria on other planets which will eventually evolve over millions of years and turn to animals and then maybe some kind of human
There is LIFE on other planets but not like super advanced green guys with black beady eyes. It is simply forms of bacteria that can grow in harsh environments.
All animals need water, that is why it is so hard to find life on other planets. However some bacteria on the other hand do no need water to survive.
Yes.
The other planets are not similar to dwarf planets.
The other planets do have gravity.
yes we can live
The other two planets are Mercury and Venus.
no thunder does not appear in other planets
bacteria is everywhere. there are some good and some bad. we have good bacteria in our bodies and that's what's keeping us alive and well. All environments produce their own bacterias in order to benefit the surroundings. Bacteria is what life started from. It has recently been found in space, leading scientist to believe there may be life on other planets. There is no where bacteria won't grow.
No, other planets are rotating at other speeds.