Public chat messages from the NASA Artemis II lunar flyby broadcast on April 6, 2026, collected simultaneously from YouTube and Twitch during the first crewed lunar mission since Apollo 17.

	Dataset Composition

Platform Authors Messages Broadcast Duration

YouTube 118,872 148,712 ~4.5 hours

Twitch 39,364 93,782 ~4.5 hours

Total 158,236 242,494 —

Dataset Structure

This is a unified dataset containing all… See the full description on the dataset page: https://huggingface.co/datasets/JosJenn/nasa-artemis-ii-live-chat-comments.