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** Earth Day 20 is celebrated by millions worldwide.
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** and Earth
** International Mother Earth Day ( International )
** Episode 2: The Earth Explodes ( 1991 )
** Three Books of Known Space ( 1996 reprint of Tales of Known Space, with " Madness Has Its Place " in place of " The Borderland of Sol ", packed with World of Ptavvs and A Gift from Earth )
** The Green Hills of Earth ( 1947 ).
** Empire Earth: the last mission of the German campaign is to carry out Operation Sea Lion
** The Earth Will Shake ( 1982 )
** Cosmic Trigger II: Down to Earth ( 1992 )
** Ground track, the path on the surface of the Earth directly below an aircraft or satellite
** Department of Earth Sciences
** Bertrand Piccard and Brian Jones become the first to circumnavigate the Earth in a hot air balloon.
** The Super Dimension Fortress Macross ( 1982 – 1983 ): A huge spaceship appears high above Earth and crashes into an island in the Pacific, triggering a world war.
** The Comet Hale-Bopp makes its closest approach to Earth.
** Patricia Neal, American actress ( The Day The Earth Stood Still ) ( d. 2010 )
** Apollo program: Apollo 10 returns to Earth, after a successful 8-day test of all the components needed for the upcoming first manned Moon landing.
** Project Diana bounces radar waves off the Moon, measuring the exact distance between the Earth and the Moon, and proving that communication is possible between Earth and outer space, effectively opening the space age.
** Vostok 1: Soviet cosmonaut Yuri Gagarin becomes the first human in space, orbiting the Earth once.
** Jacques Piccard and Don Walsh descend into the Mariana Trench in the bathyscaphe Trieste, reaching the depth of 10, 911 meters ( 35, 797 feet ) and become the first human beings to reach the lowest spot on Earth.
** Luna 20 comes back to Earth with 55 grams ( 1. 94 oz ) of lunar soil.
** The first Earth Day proclamation is issued by San Francisco Mayor Joseph Alioto.
** The USSR's Venera 7 becomes the first spacecraft to land successfully on Venus and transmit data back to Earth.
** Apollo program: Apollo 14 returns to Earth after the third manned Moon landing.
** Gemini 6 and Gemini 7 perform the first controlled rendezvous in Earth orbit.
** Asteroid 4581 Asclepius approaches the Earth at a distance of 700, 000 kilometers.
** and Day
** Father Damien Day ( Hawaii )
** Earliest day on which Emancipation Day can fall, celebrated on the first Monday of August.
** Emancipation Day ( Barbados, Bermuda, Guyana, Jamaica, Trinidad and Tobago )
** Stephen of Perm, see also Old Permic Alphabet Day
** Gwangbokjeol, " Liberation Day " ( South Korea )
** Jogukhaebangui nal, " Fatherland Liberation Day " ( North Korea )
** Workers Memorial Day ( International )
** World Day for Safety and Health at Work ( International )
** Hansik and Arbor Day ( South Korea )
** UnFreedom Day ( South Africa, unofficial )
** Mother's Day ( Panama )
** Barbórka, Miners ' Day in Poland
** Day of Good Will ( South Africa and Namibia )
** Family Day ( Vanuatu )
** Father's Day ( Bulgaria )
** Sanghamitta Day
** National Day, celebrates the independence of Saint Lucia from United Kingdom in 1979.
** Defender of the Fatherland Day ( Russia )
** World Day of the Sick ( Roman Catholic Church )
** La Chandeleur or Crêpe Day ( France )
** Bun Day ( Iceland )
** Last Day
** Midsummer Day ( England )
** Martyrs ' Day ( India )
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