JosJenn/nasa-artemis-ii-live-chat-youtube-comments

---
license: cc-by-4.0
language:
- en
annotations_creators:
- no-annotation
language_creators:
- found
multilinguality:
- monolingual
size_categories:
- 100K<n<1M
source_datasets:
- original
task_categories:
- sequence-modeling
task_ids:
- language-modeling
---

# NASA Artemis II Live Chat Dataset — YouTube Comments

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

## Dataset Size

| Metric | Count |
|--------|-------|
| Messages | 148,712 |
| Broadcast Duration | ~4.5 hours |

## Data Schema

| Field | Type | Description |
|-------|------|-------------|
| `id` | integer | Unique message identifier |
| `platform_msg_id` | string | YouTube-specific message ID |
| `channel_id` | string | Anonymized channel identifier |
| `author_id` | string | Anonymized author identifier |
| `published_at` | string | UTC timestamp (ISO8601) |
| `msg_type` | string | Message type classification |
| `message` | string | Raw message text |
| `inserted_at` | string | When the message was recorded |
| `platform` | string | Always `youtube` |
| `category` | string | YouTube message category |
| `tags` | string | Additional classification tags |
| `sentiment` | string | Sentiment label |

## Anonymization

Usernames anonymized using SHA-256 hashing with dataset-specific salt.

## License

CC BY 4.0 — Attribution required.

## Citation

```
NASA Artemis II Live Chat Dataset
YouTube broadcast
April 6, 2026
```