Question

First astronaut wo introduce concepts of zero

Answer 1

the first person was aryabhatt who introduce zero
and some modern day scientist also do so I think

Answer 2

$\huge\red{\mathfrak{Hello..!!}}$

$\huge\boxed{\fcolorbox{red}{yellow}{Aryabhatta}}$

$<marquee scrollamount=1300>Shahnawaz_Here$