* Earth Day – April 22

* 1970 – The first Earth Day is celebrated.

* Earth Day ( United States ), and its related observances:

** International Mother Earth Day ( International )

* Earth Day

Elfman cited his first time noticing film music being when he heard Bernard Hermann's score to The Day the Earth Stood Still as an eleven-year-old and being a fan of film music since then.

Earth Day Flag

That public support for environmental concerns was widespread became clear in the Earth Day demonstrations of 1970.

* 1971 – U. N. Secretary General U Thant signs United Nations proclamation of the vernal equinox as Earth Day.

Several secular holidays are observed, such as Earth Day or, Arbor Day, or Labor Day, both internationally, and across multi-country regions, often in conjunction with organizations such as the United Nations.

* 1992 – The first World Ocean Day is celebrated, coinciding with the Earth Summit held in Rio de Janeiro, Brazil.

* 2000 – A powerful solar flare, later named the Bastille Day event, causes a geomagnetic storm on Earth.

* Equinox Earth Day ( UNO ), in the northern hemisphere, occurs on dates varying from March 19 to March 21

* 1970 – The first Earth Day proclamation is issued by Mayor of San Francisco Joseph Alioto.

* Earth Day ( International )

Within these chapters it is revealed that all persons can attain Buddhahood in this lifetime and Shakyamuni transfers the essence of the sutra to the Bodhisattvas of the Earth led by Bodhisattva Superior Practices ( Jogyo ), entrusting them with the propagation of the essence of the sutra in the Latter Day of the Law.

In early 2008, the Burnaby campus was again used for filming, this time for The Day the Earth Stood Still ( 2008 Remake ).

In 1959 the joint Soviet-Finnish film production Sampo ( titled The Day the Earth Froze when released in the United States ) adapted the Kalevala to the big screen.

Episode 422 of Mystery Science Theater 3000, produced in the 1992 – 93 season, featured The Day the Earth Froze.

The theremin was used in movie soundtracks such as Miklós Rózsa's for Spellbound and The Lost Weekend and Bernard Herrmann's for The Day the Earth Stood Still and as the theme tune for the ITV drama Midsomer Murders.

At the end of A Grand Day Out, Wallace tells Gromit to set coordinates for " 62 West Wallaby Street " as they are returning to Earth.

Other prominent games developers include Julian Gollop ( Chaos, Rebelstar, X-COM series ), Matthew Smith ( Manic Miner, Jet Set Willy ), Jon Ritman ( Match Day, Head Over Heels ), Jonathan " Joffa " Smith ( Ping Pong, Batman: The Caped Crusader, Mikie, HyperSports ), The Oliver Twins ( the Dizzy series ), Clive Townsend ( Saboteur ), Sandy White ( Ant Attack, I of the mask ), Pete Cooke ( Tau Ceti ), Mike Singleton ( The Lords of Midnight, War In Middle Earth ), and Alan Cox.

* July 14 – A powerful solar flare, later named the Bastille Day event, causes a geomagnetic storm on Earth.

Kennedy's goal was accomplished on the Apollo 11 mission when astronauts Neil Armstrong and Buzz Aldrin landed their Lunar Module ( LM ) on the Moon on July 20, 1969 and walked on its surface while Michael Collins remained in lunar orbit in the command spacecraft, and all three landed safely on Earth on July 24.

Since that time, the rate of crater production on Earth has been considerably lower, but it is appreciable nonetheless ; Earth experiences from one to three impacts large enough to produce a 20 km diameter crater about once every million years on average.

The median impact velocity on Earth is about 20 to 25 km / s.

For example, in the 19th century, the Sun appeared to be no more than 20 million years old, but the Earth appeared to be no less than 300 million years ( resolved by the discovery of nuclear fusion and radioactivity, and the theory of quantum mechanics ); or current attempts to resolve theoretical differences between quantum mechanics and general relativity.

* GCMD-The Global Change Master Directory contains more than 20, 000 descriptions of Earth science data sets and services covering all aspects of Earth and environmental sciences.

Having gained 8, 030 km per hour in speed, the spacecraft flew by Earth twice, the first time at a range of 960 km at 20: 34: 34 UT on 8 December 1990 before approaching the minor planet 951 Gaspra to a distance of 1, 604 km at 22: 37 UT on 29 October 1991.

* John Herschel Glenn, Jr., USMC ( born 1921 ); first American to orbit the Earth, 20 February 1962

The causes of the variation of < sup > 20 </ sup > Ne in the Earth have thus been hotly debated.

The < sup > 20 </ sup > Ne-enriched components are attributed to exotic primordial rare gas components in the Earth, possibly representing solar neon.

Elevated < sup > 20 </ sup > Ne abundances are found in diamonds, further suggesting a solar neon reservoir in the Earth.

The nutation of the axis of the Earth was discovered in 1728 by the British astronomer James Bradley, but this nutation was not explained in detail until 20 years later.

M10 is a fairly close globular cluster, only 20, 000 light-years from Earth.

* NOAA page on Climate Forcing Data includes ( calculated ) data on Earth orbit variations over the last 50 million years and for the coming 20 million years

He estimated the Sun was at an average distance of 1210 Earth radii while the radius of the sphere of the fixed stars was 20, 000 times the radius of the Earth.

It was a cluster of 20 Altix supercomputers each with 512 Intel Itanium 2 processors running Linux, and achieved sustained speed of 42. 7 trillion floating-point operations per second ( teraflops ), easily topping Japan's famed Earth Simulator's record of 35. 86 teraflops.

The early era of space exploration was driven by a " Space Race " between the Soviet Union and the United States, the launch of the first man-made object to orbit the Earth, the USSR's Sputnik 1, on 4 October 1957, and the first Moon landing by the American Apollo 11 craft on 20 July 1969 are often taken as the boundaries for this initial period.

* The age of the solar system, including Earth, was determined, and it turned to be much older than believed earlier: more than 4 billion years, rather than the 20 million years suggested by Lord Kelvin in 1862.

** Earth Day 20 is celebrated by millions worldwide.

** Luna 20 comes back to Earth with 55 grams ( 1. 94 oz ) of lunar soil.

* April 20 – Comet Halley is visible from Earth.

Their approach pictures did, however, photograph about 20 percent of the planet's surface, showing the dark features long seen from Earth, but none of the canals mistakenly observed by ground-based astronomers.

It is the most recent supernova to have been unquestionably observed by the naked eye in our own galaxy, occurring no farther than 6 kiloparsecs or about 20, 000 light-years from Earth.