# Manned spaceflights statistics

[![en](https://img.shields.io/badge/lang-en-red.svg)](README.md)
[![ru](https://img.shields.io/badge/lang-ru-green.svg)](README-ru.md)

* Population of space
![Population of Space](./spacepop-steps.png "Population of Space")
![Time Spent by Humans in Space](./spacepop-spent-steps-filled-ru.png "Time Spent by Humans in Space")
Data source: [J. McDowell, planet4589.org](https://planet4589.org/space/astro/web/pop.html)
* Human Spaceflight Missions, Astronauts, Rides
![Human presence in space](./mannedflights-astronauts-rides-evas.png "Human presence in space")
Data source: [J. McDowell, planet4589.org](https://planet4589.org/space/astro/web/)
* Extravehicular activity
![Total duration and numbers of extravehicular activities](./evas-total-time-counts.png "Total duration and numbers of spacewalks (extravehicular activities)")
![Total number of extravehicular activities](./evas-total-counts.svg "Total number of spacewalks (extravehicular activities)")
![Total duration of extravehicular activities](./evas-total-time.svg "Total duration of spacewalks (extravehicular activities)")
Data source: [J. McDowell, planet4589.org](https://planet4589.org/space/astro/web/),
[description and definitions](https://planet4589.org/space/astro/web/evas.html).  
Note that EVA (spacewalk) at this data defines as an activity carried out in vacuum conditions
(ambient pressure of less than 50 mbar or 5 kPa) protected at most by a spacesuit.

## Image optimization applied

* [Scour](https://github.com/scour-project/scour)
* [OptiPNG](https://optipng.sourceforge.net/), see [guide to PNG optimization](https://optipng.sourceforge.net/pngtech/optipng.html)

For all manned spaceflights statistics related code see [this directory](../../src/astrodata/manned/)