Stamp: Scientific and technical equipment (Yemen, Arab Republic 1969)
Scientific and technical equipment (Yemen, Arab Republic 1969)
10 October (Yemen, Arab Republic ) within release Moon research : Apollo 11 goes into circulation Stamp Scientific and technical equipment face value 4 Yemeni buqsha
| Stamp Scientific and technical equipment in catalogues | |
|---|---|
| Michel: | Mi: YE-AR 985 |
Stamp is square format.
Scientific and technical equipment and facilities for spatial researchAlso in the issue Moon research : Apollo 11:
- Stamp - Moon base and lunar vehicles face value 1/3;
- Stamp - Moon base and lunar vehicles face value 1/3;
- Stamp - Moon base and lunar vehicles face value ¼;
- Stamp - Moon base and lunar vehicles face value 2;
- Stamp - Scientific and technical equipment face value 4;
- Stamp - Moon base and lunar vehicles face value 22;
- Stamp - Moon base and lunar vehicles face value 1/3;
- Stamp - Moon base and lunar vehicles face value 4;
- Stamp - Moon base and lunar vehicles face value ¼;
- Stamp - Moon research face value 2;
- Stamp - Moon base and lunar vehicles face value 22;
- Stamp - Moon base and lunar vehicles face value 1/3;
- Stamp - Moon base and lunar vehicles face value ¼;
- Stamp - Moon base and lunar vehicles face value ¼;
Stamp Scientific and technical equipment 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.
Outer space (or simply space) is the expanse that exists beyond Earth's atmosphere and between celestial bodies. It contains ultra-low levels of particle densities, constituting a near-perfect vacuum of predominantly hydrogen and helium plasma, permeated by electromagnetic radiation, cosmic rays, neutrinos, magnetic fields and dust. The baseline temperature of outer space, as set by the background radiation from the Big Bang, is 2.7 kelvins (−270 °C; −455 °F)
A spacecraft is a vehicle that is designed to fly and operate in outer space. Spacecraft are used for a variety of purposes, including communications, Earth observation, meteorology, navigation, space colonization, planetary exploration, and transportation of humans and cargo. All spacecraft except single-stage-to-orbit vehicles cannot get into space on their own, and require a launch vehicle (carrier rocket).
