An astronaut floating in space.
An example of an astronaut is Neil Armstrong, the man who walked on the moon.
Origin of astronaut; from French astronaute: see astro- and amp; aeronaut
Origin of astronautastro– + Greek naut&emacron;s, sailor (from naus, ship; see n&amacron;u- in Indo-European roots).
Coined from Ancient Greek ἄστρον (ástron, “star”) and ναύτης (naútēs, “sailor”).