Why are scientists searching for the existence of life on other planets ?

Name the science that deals with the kind of life on other planets.

Write two conditions for the existence of atmosphere on a planet.

"We cannot hear the explosions on other planets." Why?

Life originated on our planet

Life originated on our planet

Life originated on our planet

Life originated on our planet

Identify the segment in the sentence which contains the grammatical error from the given options. The question that there is life on other planets baffles scientists. (a) The question that (b) there is life (c) baffles scientists (d) on other planets