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This led him to estimate that Earth was about 75,000 years old. ... USGS preface on the Age of the Earth; NASA exposition on the age of Martian meteorites;
Earth is the third planet from the Sun ... The earliest direct evidence of life on Earth is contained in 3.45 billion-year-old ... a NASA astronaut, observing Earth ...
Earth formed around 4.54 billion years ago, approximately one-third the age of the universe, by accretion from the solar nebula. [4] [5] [6] Volcanic outgassing probably created the primordial atmosphere and then the ocean, but the early atmosphere contained almost no oxygen.
Schematic of NASA Earth Science Division operating satellite missions as of February 2015. NASA Earth Science is a large, umbrella program comprising a range of terrestrial and space-based collection systems in order to better understand the Earth system and its response to natural and human-caused changes.
The Hubble Space Telescope (often referred to as HST or Hubble) is a space telescope that was launched into low Earth orbit in 1990 and remains in operation. It was not the first space telescope, but it is one of the largest and most versatile, renowned as a vital research tool and as a public relations boon for astronomy.
Another example is Earth's axial tilt, which, due to friction raised within Earth's mantle by tidal interactions with the Moon , is incomputable from some point between 1.5 and 4.5 billion years from now. The outer planets' orbits are chaotic over longer timescales, with a Lyapunov time in the range of 2–230 million years.
In January 2020, NASA awarded Axiom Space a contract to build a commercial module for the ISS. The contract is under the NextSTEP2 program. NASA negotiated with Axiom on a firm fixed-price contract basis to build and deliver the module, which will attach to the forward port of the space station's Harmony (Node 2) module. Although NASA has only ...
Time in space. 9d 19h 54m [2] Missions. STS-95. Mission insignia. John Herschel Glenn Jr. (July 18, 1921 – December 8, 2016) was an American Marine Corps aviator, astronaut, businessman, and politician. He was the third American in space, and the first American to orbit the Earth, circling it three times in 1962. [3]