- Sektör: Astronomy
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Planetary Science Research Discoveries (PSRD) is an educational site sharing the latest research by NASA-sponsored scientists on meteorites, asteroids, planets, moons, and other materials in our Solar System. The website is supported by the Cosmochemistry Program of NASA's Science Mission ...
A project of international collaboration between ESA and NASA to study the Sun from its deep core to the outer corona and the solar wind. SOHO was launched in December, 1995. SOHO website.
Industry:Astronomy
General name for the three groups of meteorites with relatively young ages (slightly over 1 billion years old) that came from Mars. Another Martian meteorite that does not fall into one of these groups is ALH 84001, a cumulate rock composed mostly of orthopyroxene, which is much older than all the others with an age of 4. 5 billion years. (See Mars Meteorites compiled by Ron Baalke from the Jet Propulsion Laboratory. )
Industry:Astronomy
The Japan Aerospace Exploration Agency (JAXA) launched the SELENE (Kaguya) mission to the Moon in September 2007. Its instruments were designed to provide scientific data from a polar orbit of lunar origin and evolution and to develop the technology for future lunar exploration. In addition to the main spacecraft two smaller relay satellites provided real-time radio transmissions from the far side of the Moon to Earth. The mission lasted 21 months and ended June 10, 2009 with a controlled crash onto the lunar nearside.
Industry:Astronomy
Landing site of Apollo 11 on the Moon on July 20, 1969; Mare Tranquillitatis.
Industry:Astronomy
The geologic history of Earth's Moon has been divided into five broad time periods, or systems. From oldest to youngest, these are pre-Nectarian, Nectarian, Imbrian, Eratosthenian, and Copernican. These systems are defined by the number of impact craters on the ground surface (more craters = older surface) correlated to the absolute ages determined for the lunar rock samples returned to Earth by the U. S. Apollo missions and unpiloted Soviet Luna missions. The pre-Nectarian system extends from 4. 5 billion to 3. 9 billion years ago.
Industry:Astronomy
The geologic history of Mars has been divided into three broad time periods, or Epochs. From oldest to youngest, these are Noachian, Hesperian, and Amazonian (named after places on Mars). These Epochs are defined by the number of impact craters on the ground surface; older surfaces have more craters. The Noachian Epoch extends from the birth of Mars to between 3. 8 and 3. 5 billion years ago. The actual timing of the Epochs is not known because we have different models of the rates of meteorite falls on Mars.
Industry:Astronomy
The geologic history of Earth's Moon has been divided into five broad time periods, or systems. From oldest to youngest, these are pre-Nectarian, Nectarian, Imbrian, Eratosthenian, and Copernican. These systems are defined by the number of impact craters on the ground surface (more craters = older surface) correlated to the absolute ages determined for the lunar rock samples returned to Earth by the U. S. Apollo missions and unpiloted Soviet Luna missions. The Nectarian system extends from 3. 9 billion to 3. 85 billion years ago.
Industry:Astronomy
