Oct
19

From Earth to the Solar System: Mars Victoria Crater

ON THE EDGE: This spectacular image taken from NASA’s Mars Reconnaissance Orbiter (MRO) spacecraft shows Victoria Crater, an impact crater near the equator of Mars where hematite mineral deposits suggest Mars had a wet past. Layered sedimentary rocks are exposed along the inner wall of the crater, and the floor of the crater is occupied… Continue reading From Earth to the Solar System: Mars Victoria Crater

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Jun
28

Nakhla Meteorite Fragment, 1911

Thirty-four meteorites thought to have originated from Mars have been cataloged from around the world, including the Nakhla meteorite. On June 28, 1911, the Nakhla meteorite fell to Earth at approximately 9 a.m. in the Nakhla region of Alexandria, Egypt. Many people witnessed its explosion in the upper atmosphere before the meteorite dropped in about… Continue reading Nakhla Meteorite Fragment, 1911

Jun
14

From Earth to the Solar System: A lake at the top of the world

The highest volcanic lakes in the world are located in the Andes Mountains of South America. Their elevation and isolation make them some of the least understood lakes on Earth and excellent analogs for lakes that existed on Mars 3.5 billion years ago. Simba Lake, at an elevation of 5,872 meters in the Chilean Andes,… Continue reading From Earth to the Solar System: A lake at the top of the world

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Apr
29

The rock from Mars: ALH84001

The famous rock from Mars, ALH84001, was ejected into space by an asteroid impact on Mars long ago. It traveled through space for ~16 million years, and finally landed in the Allan Hills ice field in Antarctica about 13,000 years ago where it was collected by a team of scientists in 1984. This magnified, optical… Continue reading The rock from Mars: ALH84001