Stamp: Space walk (Bhutan 1967)
Space walk (Bhutan 1967)
30 October (Bhutan ) within release Exploration of space goes into circulation Stamp Space walk face value 10 Bhutanese chhertum
| Stamp Space walk in catalogues | |
|---|---|
| Michel: | Mi:BT 170 |
Stamp is square format.
Front with vertically ribbed plastic coatingAlso in the issue Exploration of space:
- Stamp - Space craft ans space walk face value 3;
- Stamp - Space crafts face value 5;
- Stamp - Landing module and space walk face value 7;
- Stamp - Space walk face value 10;
- Souvenir Sheet - Exploration of Space face value 25;
- Souvenir Sheet - Exploration of Space face value 2.20;
- Souvenir Sheet - Exploration of Space face value 20.50;
Stamp Space walk it reflects the thematic directions:
The Moon is Earth's only natural satellite. It orbits at an average distance of 384,400 km (238,900 mi), about 30 times the diameter of Earth. Tidal forces between Earth and the Moon have over time synchronized the Moon's orbital period (lunar month) with its rotation period (lunar day) at 29.5 Earth days, causing the same side of the Moon to always face Earth. The Moon's gravitational pull – and to a lesser extent, the Sun's – are the main drivers of Earth's tides.
