| 41. | He later studied X-ray sources outside the solar system.
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| 42. | Where there is no electricity, TVs are solar-powered.
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| 43. | Such measurements bolstered a reliable chronology for the early solar system.
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| 44. | Hawaii forbids you to forbid solar energy collectors in a covenant.
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| 45. | Rojas asked project coordinators to teach her to make solar ovens.
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| 46. | The change to solar ovens also led to an improved diet.
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| 47. | Otherwise, they might as well be from different solar systems.
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| 48. | Yet the solar system continues to cough up intriguing new objects.
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| 49. | The safest way to view any solar eclipse is by projection.
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| 50. | The last " solar maximum " was in 2000.
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