“Solar and Heliospheric Observatory”的概念、定义、翻译、参考文献-科学参考

Solar and Heliospheric Observatory

Astronomy

A joint ESA–NASA spacecraft launched in 1995 December to observe the Sun in ultraviolet and visible light, study the solar wind, and measure small oscillations on the Sun’s surface. Its twelve instruments included the Large Angle and Spectrometric Coronagraph (LASCO), a set of three coronagraphs that record white-light images of the solar corona out to 30 solar radii. LASCO has returned spectacular views of coronal mass ejections and led to the discovery of over 3000 comets, including many Kreutz sungrazers and sunskirters. Other major instruments are the Extreme Ultraviolet Imaging Telescope (EIT), which images the solar transition region and inner corona at four wavelengths in the EUV, and the Michelson Doppler Imager (MDI), which studies solar oscillations. SOHO is in a halo orbit around the inner Lagrangian point (L₁) between the Sun and Earth, some 1.5 million km from the Earth in the sunward direction, so that the Sun can be observed without the interruption of eclipses by the Earth.
http://sohowww.nascom.nasa.gov/ Official mission website.

Space Exploration

A space probe built by the European Space Agency and launched by NASA on 2 December 1995 to study the solar wind of atomic particles streaming towards the Earth from the Sun. It also observes the Sun in ultraviolet and visible light, and measures slight oscillations on the Sun's surface that can reveal details of the structure of the Sun's interior.
The US$1.2 billion probe is positioned towards the Sun, 1.5 million km from Earth. SOHO's hydrazine fuel froze in June 1998 causing contact with it to be lost. Ground control at the Goddard Space Flight Center finally regained command of SOHO in September 1998, when SOHO was turned so that its solar power arrays faced the Sun. SOHO has been in continuous use since that time. It broadcasts daily images of the Sun, which are accessible to the public via the Internet. On 28 October 2003 it observed a spectacular solar flare that required two of its instruments to be temporarily shut down to avoid damage.
SOHO carries equipment for 11 separate experiments, including the study of the Sun's corona and measurement of its magnetic field and of solar winds. The coronal diagnostic spectrometer (CDS) detects radiation at extreme ultraviolet wavelengths and allows the study of the Sun's atmosphere. The Michelson Doppler imager (MDI) measures Doppler shifts in light wavelengths and can detect winds caused by convection beneath the Sun's surface. The extreme-ultraviolet imaging telescope (EIT) investigates the mechanisms that heat the Sun's corona. The large-angle spectroscopic coronagraph (LASCO) images the corona by detecting sunlight scattered by the coronal gases.
http://sohowww.nascom.nasa.gov/ News, images, and background on the mission of the Solar and Heliospheric Observatory (SOHO) to study the Sun's structure, its outer atmosphere, and the particles that make up the solar wind. The site has available for download the SOHO screen saver, which automatically updates your desktop with the latest images of the Sun.

单词	Solar and Heliospheric Observatory
释义	Solar and Heliospheric Observatory Astronomy A joint ESA–NASA spacecraft launched in 1995 December to observe the Sun in ultraviolet and visible light, study the solar wind, and measure small oscillations on the Sun’s surface. Its twelve instruments included the Large Angle and Spectrometric Coronagraph (LASCO), a set of three coronagraphs that record white-light images of the solar corona out to 30 solar radii. LASCO has returned spectacular views of coronal mass ejections and led to the discovery of over 3000 comets, including many Kreutz sungrazers and sunskirters. Other major instruments are the Extreme Ultraviolet Imaging Telescope (EIT), which images the solar transition region and inner corona at four wavelengths in the EUV, and the Michelson Doppler Imager (MDI), which studies solar oscillations. SOHO is in a halo orbit around the inner Lagrangian point (L₁) between the Sun and Earth, some 1.5 million km from the Earth in the sunward direction, so that the Sun can be observed without the interruption of eclipses by the Earth. http://sohowww.nascom.nasa.gov/ Official mission website. Space Exploration A space probe built by the European Space Agency and launched by NASA on 2 December 1995 to study the solar wind of atomic particles streaming towards the Earth from the Sun. It also observes the Sun in ultraviolet and visible light, and measures slight oscillations on the Sun's surface that can reveal details of the structure of the Sun's interior. The US$1.2 billion probe is positioned towards the Sun, 1.5 million km from Earth. SOHO's hydrazine fuel froze in June 1998 causing contact with it to be lost. Ground control at the Goddard Space Flight Center finally regained command of SOHO in September 1998, when SOHO was turned so that its solar power arrays faced the Sun. SOHO has been in continuous use since that time. It broadcasts daily images of the Sun, which are accessible to the public via the Internet. On 28 October 2003 it observed a spectacular solar flare that required two of its instruments to be temporarily shut down to avoid damage. SOHO carries equipment for 11 separate experiments, including the study of the Sun's corona and measurement of its magnetic field and of solar winds. The coronal diagnostic spectrometer (CDS) detects radiation at extreme ultraviolet wavelengths and allows the study of the Sun's atmosphere. The Michelson Doppler imager (MDI) measures Doppler shifts in light wavelengths and can detect winds caused by convection beneath the Sun's surface. The extreme-ultraviolet imaging telescope (EIT) investigates the mechanisms that heat the Sun's corona. The large-angle spectroscopic coronagraph (LASCO) images the corona by detecting sunlight scattered by the coronal gases. http://sohowww.nascom.nasa.gov/ News, images, and background on the mission of the Solar and Heliospheric Observatory (SOHO) to study the Sun's structure, its outer atmosphere, and the particles that make up the solar wind. The site has available for download the SOHO screen saver, which automatically updates your desktop with the latest images of the Sun.
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