Question

why astronauts dont use sketch pen in space?

Answer 1

Sketch pens also have ink in them like pen and they work on earth as due to gravity of earth and atmospheric pressure on them causes ink to flow out from the narrow part which is tip and ink flow is slow and light in sketch pen ad. unlike pen they have small pores on whole refil which cause the less ink to flow out but if we take them to space where there is no gravity and atmosphere so the ink will just pop out from sketch pen as the pressure inside sketch will become very high as there is 0 pressure around it so ink will tend to flow out and there is no gravity to hold it so there is no way a sketch pen can work.
NOTE : - THERE ARE ESPECIALLY MADE PENS FOR USE IN SPACE CALLED ZERO GRAVITY PEN AS THE WORK IN NO GRAVITY ZONE.