Reference Article

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History of Earth

The history of Earth covers approximately 4 billion years (4,567,000,000 years), from Earth’s formation out of the solar nebula to the present.

Earth formed as part of the birth of the solar system: what eventually became the solar system initially existed as a large, rotating cloud of dust and gas.

It was composed of hydrogen and helium produced in the Big Bang, as well as heavier elements produced by stars long gone.

Note: This article excerpts material from the Wikipedia article "History of Earth", which is released under the GNU Free Documentation License.

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last updated on 2014-09-21 at 8:24 am EDT

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Inflatable Heat Shield Survives Hypersonic Stress Test

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NASA Releases Audio of Earth Singing

NASA Releases Audio of Earth Singing

Buzz60 (Oct. 2, 2012) The Earth is singing to all of space and NASA has the audio for us. The song, called "Chorus," is caused by Earth emitting plasma rays, which pass through the radiation belts surrounding the planet, and was captured by satellites sent by NASA to record it and experiment in the area.
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What's Up for October 2013

What's Up for October 2013

NASA (Sep. 30, 2013) Jane Houston Jones: What's Up for October. Juno's Earth flyby, International Observe the Moon Night and how to view the moon's far side. Hello and welcome. I'm Jane Houston Jones from NASA's Jet Propulsion Laboratory in Pasadena, California. Jones: On October 9 at 3:21 p.m. Eastern time, or 19:21 Universal Coordinated Time, NASA's Juno spacecraft performs a close flyby of Earth. At closest approach, Juno will come to within 347 miles or 559 kilometers of our planet's surface.
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