---
license: cc-by-4.0
pretty_name: "NASA EVA Chronology"
language:
  - en
description: >-
  Complete chronology of extravehicular activities (spacewalks) by NASA and
  Roscosmos.  375 EVAs from 1965 to 2013, including crew,
  vehicle, duration, and purpose.
size_categories:
  - n<1K
task_categories:
  - tabular-classification
tags:
  - space
  - eva
  - spacewalk
  - nasa
  - iss
  - human-spaceflight
  - open-data
  - tabular-data
configs:
  - config_name: default
    data_files:
      - split: train
        path: data/eva.parquet
---

# NASA EVA Chronology

*Part of the [Astronomy Datasets](https://huggingface.co/collections/juliensimon/astronomy-datasets-69c24caf2f17e36128946743) collection on Hugging Face.*

Complete chronology of all **375** extravehicular activities (spacewalks)
performed by NASA and Roscosmos astronauts and cosmonauts, from **1965**
to **2013** -- totalling **1,987** crew-hours outside the
spacecraft.

## Dataset description

This dataset contains the official NASA EVA chronology covering every
spacewalk by US and Russian crews.  Each record includes the EVA sequence
number, date, crew members, vehicle (Gemini, Apollo, Skylab, Shuttle, ISS,
etc.), duration in H:MM format plus a computed `duration_minutes` column, and
a free-text description of the purpose and activities.

## Schema

| Column | Type | Description |
|--------|------|-------------|
| `eva_number` | Int64 | Sequential EVA number |
| `country` | string | Country (USA / Russia) |
| `crew` | string | Crew member(s) |
| `vehicle` | string | Spacecraft or station (Gemini, Apollo, ISS, etc.) |
| `date` | datetime | Date of EVA |
| `duration` | string | Duration in H:MM format |
| `duration_minutes` | float64 | Duration in total minutes |
| `purpose` | string | Free-text description of EVA activities |

## Quick stats

- **375** EVAs (236 USA, 139 Russia)
- **1965** to **2013**
- **1,987** total crew-hours
- **151** vehicles: Soyuz TM-26 Mir 24 (7), Soyuz TM-27 Mir 25 (6), Soyuz T-10 Salyut 7 (6), Soyuz TM-12 Mir (6), Apollo 15 (6)

## Usage

```python
from datasets import load_dataset

ds = load_dataset("juliensimon/nasa-eva-chronology", split="train")
df = ds.to_pandas()

# EVAs per vehicle
print(df["vehicle"].value_counts())

# Total spacewalk hours by country
by_country = df.groupby("country")["duration_minutes"].sum() / 60
print(by_country)

# Longest EVAs
longest = df.nlargest(10, "duration_minutes")[["date", "crew", "vehicle", "duration"]]
print(longest)
```

## Data source

NASA Open Data Portal -- Extra-vehicular Activity (EVA) - US and Russia.
[data.nasa.gov](https://data.nasa.gov/dataset/extra-vehicular-activity-eva-us-and-russia)

## Related datasets

- [astronaut-database](https://huggingface.co/datasets/juliensimon/astronaut-database) -- Complete astronaut database
- [launch-log](https://huggingface.co/datasets/juliensimon/launch-log) -- McDowell launch log

## Pipeline

Source code: [juliensimon/space-datasets](https://github.com/juliensimon/space-datasets)

## Citation

```bibtex
@dataset{nasa_eva_chronology,
  author = {Simon, Julien},
  title = {NASA EVA Chronology},
  year = {2026},
  publisher = {Hugging Face},
  url = {https://huggingface.co/datasets/juliensimon/nasa-eva-chronology},
  note = {Based on NASA Open Data Portal EVA dataset}
}
```

## License

[CC-BY-4.0](https://creativecommons.org/licenses/by/4.0/)