ID: 59755666
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1st Spatial Flight Space Alexei Leonov Souvenir Sheet Mint NH
$16.77
$19.73
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MeditativePhilately (499)
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Grade: Gem Mali 1st Spatial Flight Space Alexei Leonov Souvenir Sheet Mint NH In the context of spaceflight, a satellite is an artificial object which has been intentionally placed into orbit. Such objects are sometimes called artificial satellites to di ... Read More
Item Specifics
- Country
- United States
- Condition
- Mint (NH)
- Stamp Format
- Souvenir Sheet
Item Description
Grade: GemMali 1st Spatial Flight Space Alexei Leonov Souvenir Sheet Mint NH In the context of spaceflight, a satellite is an artificial object which has been intentionally placed into orbit. Such objects are sometimes called artificial satellites to distinguish them from natural satellites such as Earth's Moon.In 1957 the Soviet Union launched the world's first artificial satellite, Sputnik 1. Since then, about 8,100 satellites from more than 40 countries have been launched. According to a 2018 estimate, some 4,900 remain in orbit, of those about 1,900 were operational; while the rest have lived out their useful lives and become space debris. Approximately 500 operational satellites are in low-Earth orbit, 50 are in medium-Earth orbit (at 20,000 km), and the rest are in geostationary orbit (at 36,000 km). A few large satellites have been launched in parts and assembled in orbit. Over a dozen space probes have been placed into orbit around other bodies and become artificial satellites to the Moon, Mercury, Venus, Mars, Jupiter, Saturn, a few asteroids, a comet and the Sun. Fast & Free Shipping within U.S.A. We Care for your order, Pack it carefully and ship it within 24 hours. Satisfaction Guaranteed! Please explore our store for more stamps, souvenir sheets, post-office collectibles and philately books and pre-philatelic items: montecinos.philately
Seller Information
- Seller
- MeditativePhilately (499)
- Registered Since
- 04/09/2018
- Feedback
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- Meditative Philately
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- Item Location
- New York, United States
- Ships To
- Worldwide
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