Solar Heliospheric Observatory

(SOHO) An ESA satellite, with some NASA instrumentation, launched in 1995 into a halo orbit around the L₁ Lagrangian point – the point 1.5 million km from Earth at which the gravitational pull of Sun and Earth balance. SOHO is designed to study the Sun's internal structure (see helioseismology), and the physical processes that form and heat the solar corona and give rise to the solar wind, which permeates the heliosphere. SOHO is part of ESA's contribution to the Solar/Terrestrial Energy Programme (STEP). Although its primary mission is to study the Sun, many of SOHO's solar images made using coronagraphs to block out the photosphere have revealed numerous hitherto unknown comets. By the start of 2005, SOHO had ‘discovered’ well over 900 comets.

单词	solar heliospheric observatory
释义	Solar Heliospheric Observatory Solar Heliospheric Observatory (SOHO) An ESA satellite, with some NASA instrumentation, launched in 1995 into a halo orbit around the L₁ Lagrangian point – the point 1.5 million km from Earth at which the gravitational pull of Sun and Earth balance. SOHO is designed to study the Sun's internal structure (see helioseismology), and the physical processes that form and heat the solar corona and give rise to the solar wind, which permeates the heliosphere. SOHO is part of ESA's contribution to the Solar/Terrestrial Energy Programme (STEP). Although its primary mission is to study the Sun, many of SOHO's solar images made using coronagraphs to block out the photosphere have revealed numerous hitherto unknown comets. By the start of 2005, SOHO had ‘discovered’ well over 900 comets.
随便看	health plan michigan health planning agency health planning council health planning council of northeast florida health planning council of southwest florida health planning region health plan of nevada health plan of san joaquin health plan of san mateo health plan payment and operations support team health plan philippines, inc. health plan purchasing cooperatives health plan report card health plans, inc. health point healthpoint capital, llc health points health policy health policy action committee health policy analysis program health policy and administration health policy and economic research unit health policy and management health policy and research foundation of california health policy and strategy associates llc