The Astronaut: Dark Skin Tone emoji is a ZWJ sequence combining ? Person, ? Dark Skin Tone, Zero Width Joiner and ? Rocket. These display as a single emoji on supported platforms.
Astronaut: Dark Skin Tone was added to Emoji 12.1 in 2019.
U+1F9D1
U+1F3FF
U+200D
U+1F680
??? Adult
??? Emoji modifier fitzpatrick type-6
??? Zero width joiner
??? Rocket