Orbiting Solar Observatory
[ar] المرصد الشمسي الدائر
[ca] Orbiting Solar Observatory
[de] Orbiting Solar Observatory
[es] Orbiting Solar Observatory
[fr] Orbiting Solar Observatory
[gl] Orbiting Solar Observatory
[he] Orbiting Solar Observatory
[hu] Orbiting Solar Observatory
[it] Orbiting Solar Observatory
[ja] 太陽観測衛星