Mini Sheet: Halley's Comet (Guinea 1986)

  1. Catalogue
  2. Guinea
  3. 1986
  4. Halley's Comet 1985 - 1986
  5. Halley's Comet

Halley's Comet (Guinea 1986)

01 July (Guinea ) within release Halley's Comet 1985 - 1986 goes into circulation Mini Sheet Halley's Comet face value 925 Guinean franc

Mini Sheet Halley's Comet in catalogues
Michel: Mi: GN 1106A-1111AKB

Mini Sheet is square format.

Also in the issue Halley's Comet 1985 - 1986:

Data entry completed
56%
Mini Sheet Halley's Comet in digits
Country: Guinea
Date: 1986-07-01
Print: Offset lithography
Perforation: comb 13¼
Emission: Commemorative
Format: Mini Sheet
Face Value: 925 Guinean franc

Mini Sheet Halley's Comet it reflects the thematic directions:

Art is a diverse range of human activities in creating visual, auditory or performing artifacts (artworks), expressing the author's imaginative or technical skill, intended to be appreciated for their beauty or emotional power. In their most general form these activities include the production of works of art, the criticism of art, the study of the history of art, and the aesthetic dissemination of art. The oldest documented forms of art are visual arts, which include creation of images or objects in fields including painting, sculpture, printmaking, photography, and other visual media. Architecture is often included as one of the visual arts; however, like the decorative arts, or advertising, it involves the creation of objects where the practical considerations of use are essential—in a way that they usually are not in a painting, for example. Music, theatre, film, dance, and other performing arts, as well as literature and other media such as interactive media, are included in a broader definition of art or the arts. Until the 17th century, art referred to any skill or mastery and was not differentiated from crafts or sciences. In modern usage after the 17th century, where aesthetic considerations are paramount, the fine arts are separated and distinguished from acquired skills in general, such as the decorative or applied arts.

A comet is an icy, small Solar System body that warms and begins to release gases when passing close to the Sun, a process called outgassing. This produces an extended, gravitationally unbound atmosphere or coma surrounding the nucleus, and sometimes a tail of gas and dust gas blown out from the coma. These phenomena are due to the effects of solar radiation and the outstreaming solar wind plasma acting upon the nucleus of the comet. Comet nuclei range from a few hundred meters to tens of kilometers across and are composed of loose collections of ice, dust, and small rocky particles. The coma may be up to 15 times Earth's diameter, while the tail may stretch beyond one astronomical unit. If sufficiently close and bright, a comet may be seen from Earth without the aid of a telescope and can subtend an arc of up to 30° (60 Moons) across the sky. Comets have been observed and recorded since ancient times by many cultures and religions.

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 scientist is a person who researches to advance knowledge in an area of the natural sciences

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).

Mini Sheet, Halley's Comet, Guinea, , Art, Comets, Outer Space, Scientists, Spacecrafts