HUBBLE SPACE TELESCOPE 25th Anniversary 1 Oz Silver Coin 5$ Samoa 2015

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HUBBLE SPACE TELESCOPE 25th Anniversary 1 Oz Silver Coin 5$ Samoa 2015:
$108.47

value:5 DollarsMetal:Silver 999/1000Weight (g):31.1 (1 oz)Size (mm):32 x 66Quality:ProofMintage (pcs):1.990Certificate COA:YesBox:Yes
HUBBLE SPACE TELESCOPE 25th Anniversary 1 Oz Silver Coin 5$ Samoa 2015Description & Design

This amazing Silver Coin is dedicated to the 25th Anniversary of the Hubble Telescope, one of the largest and most versatile telescope and is well known as both a vital research tool and a public relations boon for astronomy. The coin has wonderful colors and sparkling stars. The coin is accompanied by a Certificate of Authenticity. Limited mintage to 1.990 pieces worldwide.

The reverse of this rectangular coin depicts a beautiful image with the space, more exactly with the cosmic dust, beautiful images taken by Hubble telescope. The impressive colors and the sparkling stars of the background of the reverse makes the coin unique and very spectacular. On the top of the coin, in the left side, the inscriptions: “Hubble Space Telescope” and “25th Anniversary”. The obverse of the coin depicts the Coat of Arms of Samoa and the face value: “5 Dollars”.

Background & History

The Hubble Space Telescope
The Hubble Space Telescope (HST) is a space telescope that was launched into low Earth orbit in 1990, and remains in operation. Although not the first space telescope, Hubble is one of the largest and most versatile, and is well known as both a vital research tool and a public relations boon for astronomy. The HST is named after the astronomer Edwin Hubble, and is one of NASA\'s Great Observatories, along with the Compton Gamma Ray Observatory, the Chandra X-ray Observatory, and the Spitzer Space Telescope. With a 2.4-meter (7.9 ft) mirror, Hubble\'s four main instruments observe in the near ultraviolet, visible, and near infrared spectra. Hubble\'s orbit outside the distortion of Earth\'s atmosphere allows it to take extremely high-resolution images, with substantially lower background light than ground-based telescopes.
Hubble has recorded some of the most detailed visible-light images ever, allowing a deep view into space and time. Many Hubble observations have led to breakthroughs in astrophysics, such as accurately determining the rate of expansion of the universe. The HST was built by the United States space agency NASA, with contributions from the European Space Agency. The Space Telescope Science Institute (STScI) selects Hubble\'s targets and processes the resulting data, while the Goddard Space Flight Center controls the spacecraft. Space telescopes were proposed as early as 1923. Hubble was funded in the 1970s, with a proposed launch in 1983, but the project was beset by technical delays, budget problems, and the Challenger disaster (1986). When finally launched in 1990, Hubble\'s main mirror was found to have been ground incorrectly, compromising the telescope\'s capabilities. The optics were corrected to their intended quality by a servicing mission in 1993.