Stamp: Coronal Hole (United States of America 2021)
Coronal Hole (United States of America 2021)
18 June (United States of America ) within release Sun Science (2021) goes into circulation Stamp Coronal Hole face value FOREVER No Face Value
| Stamp Coronal Hole in catalogues | |
|---|---|
| Colnect codes: | Col: US 2021-15j |
Stamp is square format.
Stamp from se-tenant block of ten. Face value US$0.55 on day of issueAlso in the issue Sun Science (2021):
- Stamp - Active Sun face value FOREVER;
- Stamp - Coronal Hole face value FOREVER;
- Stamp - Coronal Hole face value FOREVER;
- Stamp - Coronal Loops face value FOREVER;
- Stamp - Coronal Loops face value FOREVER;
- Stamp - Plasma Blast face value FOREVER;
- Stamp - Plasma Blast face value FOREVER;
- Stamp - Solar Flare face value FOREVER;
- Stamp - Solar Flare face value FOREVER;
- Se-tenant - Sun Science face value 10*FOREVER;
- Stamp - Sunspots face value FOREVER;
Stamp Coronal Hole it reflects the thematic directions:
Astronomy is a natural science that studies celestial objects and the phenomena that occur in the cosmos. It uses mathematics, physics, and chemistry in order to explain their origin and their overall evolution. Objects of interest include planets, moons, stars, nebulae, galaxies, meteoroids, asteroids, and comets. Relevant phenomena include supernova explosions, gamma ray bursts, quasars, blazars, pulsars, and cosmic microwave background radiation. More generally, astronomy studies everything that originates beyond Earth's atmosphere. Cosmology is a branch of astronomy that studies the universe as a whole. .
The Sun, also known as Sol, is a star at the center of the solar system. It is a white star that gives off different types of energy such as infrared energy (heat), ultraviolet light, radio waves and light. It also gives off a stream of particles, which reaches Earth as "solar wind". The source of all this energy is nuclear fusion. Nuclear fusion is the reaction in the star which turns hydrogen into helium and makes huge amounts of energy. It is a nearly perfect ball of hot plasma.
