Why isn't convection responsible for heat to earth from the sun?

Answer 1

There is no air, or significant amount of any gas, in outer space.

Answer 2

if air isnt fluid why isnt convection responsible for transferring

heat to the earth from the sun

Answer 3

Because there is no air between the earth and the sun.

Answer 4

There is no air between Earth and the Sun. At an altitude of 100 km above ground level, there is hardly any air left. Most of the remaining 150 million kilometers is basically empty space.