Meteorite

1920

Between the late 1920s and the 1950s, he traveled across the region, educating local people about what meteorites looked like and what to do if they thought they had found one, for example, in the course of clearing a field.

1950

Between the late 1920s and the 1950s, he traveled across the region, educating local people about what meteorites looked like and what to do if they thought they had found one, for example, in the course of clearing a field.

1959

The first of these was the Přibram meteorite, which fell in Czechoslovakia (now the Czech Republic) in 1959.

1960

The result was the discovery of over 200 new meteorites, mostly stony types. In the late 1960s, Roosevelt County, New Mexico in the Great Plains was found to be a particularly good place to find meteorites.

1963

One of these was the Prairie Network, operated by the Smithsonian Astrophysical Observatory from 1963 to 1975 in the midwestern US.

1967

After the discovery of a few meteorites in 1967, a public awareness campaign resulted in the finding of nearly 100 new specimens in the next few years, with many being by a single person, Ivan Wilson.

In total, nearly 140 meteorites were found in the region since 1967.

1971

Another program in Canada, the Meteorite Observation and Recovery Project, ran from 1971 to 1985.

1975

One of these was the Prairie Network, operated by the Smithsonian Astrophysical Observatory from 1963 to 1975 in the midwestern US.

1977

It too recovered a single meteorite, Innisfree, in 1977.

1985

Another program in Canada, the Meteorite Observation and Recovery Project, ran from 1971 to 1985.

2006

(The very first example of a stony meteorite found in association with a large impact crater, the Morokweng crater in South Africa, was reported in May 2006.) Several phenomena are well documented during witnessed meteorite falls too small to produce hypervelocity craters.

2015

A few researchers have favored tektites originating from the Moon as volcanic ejecta, but this theory has lost much of its support over the last few decades. ==Meteorite chemistry== In March 2015, NASA scientists reported that complex organic compounds found in DNA and RNA, including uracil, cytosine, and thymine, have been formed in the laboratory under outer space conditions, using starting chemicals, such as pyrimidine, found in meteorites.




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