Infinite number of planets with life

[Hovik]

yeah, but its everything "as we know now" few years ago we believed that the planet was flat, or the centre of the universe...
and how the universe can have a start in time? was there something before? what is this "nothing"? any gases? every thing just started, where the gases game from?
thanks

A man by the name of Pythagoras determined not only that the Earth was round but a very close approximation of its circumference in the 6th century BCE. The belief that the earth is flat hasn't been around for a very long time.

The geocentric model of the universe persisted for as long as it did due to the church enforcing its theologically-inspired model of the cosmos.

The universe didn't have a start point because time didn't exist before the universe existed. Time is something that only applies to things within the universe itself, so it's useless to use it as a frame of reference for what was "before" the universe--the short answer is that there wasn't anything before the universe, neither space nor time.

When the universe expanded, basic particles developed into elements which were further synthesized into other elements in the crucibles of stars. Gasses are just a state of matter, so these also didn't exist before the universe.