"\uC790\uC804 \uC8FC\uAE30(\u81EA\u8F49\u9031\u671F,rotation period)\uB294 \uD55C \uCC9C\uCCB4\uAC00 \uBC30\uACBD\uC758 \uBCC4\uB4E4\uC744 \uC911\uC2EC\uC73C\uB85C \uC790\uC804\uCD95\uC744 \uAE30\uC900\uD558\uC5EC \uD55C \uBC14\uD034 \uD68C\uC804\uD558\uB294 \uB370 \uAC78\uB9AC\uB294 \uC2DC\uAC04\uC774\uB2E4. \uC774\uB294 \uD0DC\uC591\uC2DC\uC640\uB294 \uB2E4\uB978 \uAC1C\uB150\uC774\uB2E4. \uCC9C\uCCB4\uC758 \uC790\uC804 \uC911\uC2EC\uC774 \uB418\uB294 \uCD95\uC744 \uC790\uC804\uCD95 \uC774\uB77C\uACE0 \uD558\uBA70, \uC790\uC804\uCD95\uC744 \uB530\uB77C 1\uD68C\uC804\uD558\uB294 \uB370 \uAC78\uB9AC\uB294 \uC2DC\uAC04\uC744 \uC790\uC804 \uC8FC\uAE30 \uB77C\uACE0 \uD55C\uB2E4. \uC774 \uB54C \uC790\uC804 \uC8FC\uAE30\uB294 \uC790\uC804 \uC8FC\uCCB4\uAC00 360\uB3C4 \uD68C\uC804\uD558\uB294 \uC2DC\uAC04\uC774\uB2E4. \uC9C0\uAD6C\uAC00 \uD0DC\uC591\uC744 \uD55C\uBC14\uD034 \uB3C4\uB294\uB370 \uAC78\uB9AC\uB294 \uAE30\uAC04\uC740 1\uB144\uC774\uB2E4. \uC5EC\uAE30\uC11C 1\uB144\uC774 \uC9C0\uAD6C\uC758 \uACF5\uC804 \uC8FC\uAE30\uB97C \uC758\uBBF8\uD55C\uB2E4. \uC790\uC804 \uC8FC\uAE30\uB780 \uCC9C\uCCB4\uAC00 \uD55C \uBC14\uD034 \uC790\uC804\uD558\uB294 \uB370 \uAC78\uB9AC\uB294 \uC2DC\uAC04\uC744 \uB9D0\uD55C\uB2E4. \uD0DC\uC591\uC758 \uC790\uC804 \uC8FC\uAE30\uB97C \uAC1C\uB7B5\uC801\uC73C\uB85C \uCE21\uC815\uD588\uB358 \uC0AC\uB78C\uC740 \uAC08\uB9B4\uB808\uC774\uC600\uB2E4. \uD751\uC810\uC758 \uD68C\uC804 \uC8FC\uAE30\uB97C \uC774\uC6A9\uD588\uC5C8\uB358 \uAC83\uC774\uB2E4. \uB610\uD55C \uD0DC\uC591\uC740 \uC720\uCCB4\uC774\uAE30 \uB54C\uBB38\uC5D0 \uAC15\uCCB4\uC640 \uAC19\uC774 \uC704\uB3C4\uBCC4\uB85C \uAC19\uC740 \uC8FC\uAE30\uC758 \uD68C\uC804\uC744 \uD558\uC9C0\uB294 \uC54A\uB294\uB2E4. \uADF8\uB7EC\uB098 \uD0DC\uC591\uC758 \uC790\uC804\uC740 \uD45C\uBA74\uC774 \uACE0\uCCB4\uAC00 \uC544\uB2C8\uAE30 \uB54C\uBB38\uC5D0 \uC704\uB3C4\uC5D0 \uB530\uB77C\uC790\uC804\uC8FC\uAE30\uAC00 \uB2EC\uB77C\uC9C4\uB2E4. \uD0DC\uC591\uC801\uB3C4 \uBD80\uADFC\uC758 \uC790\uC804\uC8FC\uAE30\uB294 \uC57D 25\uC77C\uC774\uB098 \uADF9 \uBD80\uADFC\uC5D0\uC11C\uB294 30\uC77C \uC815\uB3C4\uB85C \uC99D\uAC00\uD55C\uB2E4. 2004\uB144 \uB9D0 \uB0A8\uC544\uC2DC\uC544 \uC9C0\uC5ED\uC744 \uAC15\uD0C0\uD55C \uC9C0\uC9C4\uC740 \uACFC\uC5F0 \uC9C0\uCD95\uC744 \uD754\uB4E4\uACE0 \uC790\uC804 \uC18D\uB3C4\uB97C \uBCC0\uD654\uC2DC\uCF30\uB2E4. \uD1A0\uC131\uC758 \uC790\uC804 \uC8FC\uAE30\uB294 \uACE0\uC791 10.5\uC2DC\uAC04\uC774\uBBC0\uB85C \uD1A0\uC131\uC758 \uC5ED\uD559\uC801 \uD3B8\uD3C9\uB3C4\uB294 1/10\uC774\uB2E4. \uBD84\uB958:\uC790\uC804 \uBD84\uB958:\uC2DC\uAC04"@ko . . "\uC790\uC804 \uC8FC\uAE30(\u81EA\u8F49\u9031\u671F,rotation period)\uB294 \uD55C \uCC9C\uCCB4\uAC00 \uBC30\uACBD\uC758 \uBCC4\uB4E4\uC744 \uC911\uC2EC\uC73C\uB85C \uC790\uC804\uCD95\uC744 \uAE30\uC900\uD558\uC5EC \uD55C \uBC14\uD034 \uD68C\uC804\uD558\uB294 \uB370 \uAC78\uB9AC\uB294 \uC2DC\uAC04\uC774\uB2E4. \uC774\uB294 \uD0DC\uC591\uC2DC\uC640\uB294 \uB2E4\uB978 \uAC1C\uB150\uC774\uB2E4. \uCC9C\uCCB4\uC758 \uC790\uC804 \uC911\uC2EC\uC774 \uB418\uB294 \uCD95\uC744 \uC790\uC804\uCD95 \uC774\uB77C\uACE0 \uD558\uBA70, \uC790\uC804\uCD95\uC744 \uB530\uB77C 1\uD68C\uC804\uD558\uB294 \uB370 \uAC78\uB9AC\uB294 \uC2DC\uAC04\uC744 \uC790\uC804 \uC8FC\uAE30 \uB77C\uACE0 \uD55C\uB2E4. \uC774 \uB54C \uC790\uC804 \uC8FC\uAE30\uB294 \uC790\uC804 \uC8FC\uCCB4\uAC00 360\uB3C4 \uD68C\uC804\uD558\uB294 \uC2DC\uAC04\uC774\uB2E4. \uC9C0\uAD6C\uAC00 \uD0DC\uC591\uC744 \uD55C\uBC14\uD034 \uB3C4\uB294\uB370 \uAC78\uB9AC\uB294 \uAE30\uAC04\uC740 1\uB144\uC774\uB2E4. \uC5EC\uAE30\uC11C 1\uB144\uC774 \uC9C0\uAD6C\uC758 \uACF5\uC804 \uC8FC\uAE30\uB97C \uC758\uBBF8\uD55C\uB2E4. \uC790\uC804 \uC8FC\uAE30\uB780 \uCC9C\uCCB4\uAC00 \uD55C \uBC14\uD034 \uC790\uC804\uD558\uB294 \uB370 \uAC78\uB9AC\uB294 \uC2DC\uAC04\uC744 \uB9D0\uD55C\uB2E4. \uD0DC\uC591\uC758 \uC790\uC804 \uC8FC\uAE30\uB97C \uAC1C\uB7B5\uC801\uC73C\uB85C \uCE21\uC815\uD588\uB358 \uC0AC\uB78C\uC740 \uAC08\uB9B4\uB808\uC774\uC600\uB2E4. \uD751\uC810\uC758 \uD68C\uC804 \uC8FC\uAE30\uB97C \uC774\uC6A9\uD588\uC5C8\uB358 \uAC83\uC774\uB2E4. \uB610\uD55C \uD0DC\uC591\uC740 \uC720\uCCB4\uC774\uAE30 \uB54C\uBB38\uC5D0 \uAC15\uCCB4\uC640 \uAC19\uC774 \uC704\uB3C4\uBCC4\uB85C \uAC19\uC740 \uC8FC\uAE30\uC758 \uD68C\uC804\uC744 \uD558\uC9C0\uB294 \uC54A\uB294\uB2E4. \uADF8\uB7EC\uB098 \uD0DC\uC591\uC758 \uC790\uC804\uC740 \uD45C\uBA74\uC774 \uACE0\uCCB4\uAC00 \uC544\uB2C8\uAE30 \uB54C\uBB38\uC5D0 \uC704\uB3C4\uC5D0 \uB530\uB77C\uC790\uC804\uC8FC\uAE30\uAC00 \uB2EC\uB77C\uC9C4\uB2E4. \uD0DC\uC591\uC801\uB3C4 \uBD80\uADFC\uC758 \uC790\uC804\uC8FC\uAE30\uB294 \uC57D 25\uC77C\uC774\uB098 \uADF9 \uBD80\uADFC\uC5D0\uC11C\uB294 30\uC77C \uC815\uB3C4\uB85C \uC99D\uAC00\uD55C\uB2E4. \uB2EC\uC774 \uB298 \uD55C\uCABD \uC5BC\uAD74\uB9CC \uBCF4\uC774\uB294 \uAC83\uC740 \uACF5\uC804\uC8FC\uAE30(\uC9C0\uAD6C\uC8FC\uC704\uB97C \uB3C4\uB294)\uC640 \uC790\uC804\uC8FC\uAE30\uB97C \uC815\uD655\uD788 \uB9DE\uCD94\uAE30 \uB54C\uBB38\uC774\uB2E4. \uC9C0\uAD6C\uC758 \uB2EC \uC774\uC678\uC5D0\uB3C4 \uD654\uC131, \uBAA9\uC131, \uD1A0\uC131 \uB4F1 \uB2E4\uB978 \uD589\uC131\uB4E4\uC5D0 \uC788\uB294 \uC704\uC131\uB4E4\uB3C4 \uB300\uBD80\uBD84 \uC790\uC804 \uC8FC\uAE30\uC640 \uACF5\uC804 \uC8FC\uAE30\uAC00 \uC815\uD655\uD788 \uC77C\uCE58\uD55C\uB2E4. 2004\uB144 \uB9D0 \uB0A8\uC544\uC2DC\uC544 \uC9C0\uC5ED\uC744 \uAC15\uD0C0\uD55C \uC9C0\uC9C4\uC740 \uACFC\uC5F0 \uC9C0\uCD95\uC744 \uD754\uB4E4\uACE0 \uC790\uC804 \uC18D\uB3C4\uB97C \uBCC0\uD654\uC2DC\uCF30\uB2E4. 1. \n* \uBBF8\uAD6D \uC9C0\uC9C8\uC870\uC0AC\uC5F0\uAD6C\uC18C\uC758 \uCF04 \uD5C8\uB4DC\uB108\uD2B8 \uC5F0\uAD6C\uC6D0\uC740 \uC9C0\uC9C4\uC73C\uB85C \uC9C0\uCD95\uC774 2.5cm \uC815\uB3C4 \uD754\uB4E4\uB838\uACE0 \uC790\uC804 \uC8FC\uAE30\uAC00 100\uB9CC\uBD84\uC758 3\uCD08 \uC9E7\uC544\uC84C\uB2E4\uACE0 \uC8FC\uC7A5\uD588\uB2E4. 2. \n* \uC2A4\uC704\uC2A4 \uBCA0\uB978\uB300\uD559 \uC5F0\uAD6C\uC18C\uB3C4 \uC9C0\uCD95\uC774 8cm\uB098 \uC6C0\uC9C1\uC600\uACE0 \uC790\uC804 \uC8FC\uAE30\uAC00 \uB9CC\uBD84\uC758 1\uCD08\uB098 \uBCC0\uD588\uB2E4\uACE0 \uC8FC\uC7A5\uD588\uB2E4. 3. \n* \uD55C\uD3B8, \uBBF8\uD56D\uACF5\uC6B0\uC8FC\uAD6D(NASA) \uC81C\uD2B8\uCD94\uC9C4\uC5F0\uAD6C\uC18C \uC9C0\uAD6C \uBB3C\uB9AC\uD559\uC790 \uB9AC\uCC98\uB4DC \uADF8\uB85C\uC2A4\uB294 \uC774\uBC88 \uC9C0\uC9C4\uC73C\uB85C \uC9C0\uAD6C\uAC00 3\uB9C8\uC774\uD06C\uB85C\uCD08(1\uB9C8\uC774\uD06C\uB85C\uCD08\uB294 100\uB9CC\uBD84\uC758 1\uCD08) \uC815\uB3C4 \uBE68\uB9AC \uC790\uC804\uD558\uACE0 \uC790\uC804\uCD95\uC744 2.5\u339D \uC815\uB3C4 \uAE30\uC6B8\uC5B4\uC9C0\uAC8C \uD558\uB294 \uC6D0\uC778\uC774 \uB410\uC744 \uAC83\uC774\uB77C\uB294 \uAC00\uC124\uC744 \uC81C\uAE30\uD588\uB2E4. \uADF8\uB85C\uC2A4\uB294 \u201C\uC778\uB3C4\uC591 \uC544\uB798 \uC9C0\uAC01\uD310\uC774 \uC720\uB77C\uC2DC\uC544\uD310 \uC544\uB798\uB85C \uB07C\uC6CC\uC84C\uB2E4\u201D\uBA74\uC11C \u201C\uC774\uB294 \uC9C0\uAD6C\uAC00 \uC880\uB354 \uC791\uC544\uC9C0\uACE0 \uBE68\uB9AC \uB3CC\uAC8C \uD558\uB294 \uD6A8\uACFC\uB97C \uB0B3\uC558\uB2E4\u201D\uACE0 \uC8FC\uC7A5\uD588\uB2E4. \uD1A0\uC131\uC758 \uC790\uC804 \uC8FC\uAE30\uB294 \uACE0\uC791 10.5\uC2DC\uAC04\uC774\uBBC0\uB85C \uD1A0\uC131\uC758 \uC5ED\uD559\uC801 \uD3B8\uD3C9\uB3C4\uB294 1/10\uC774\uB2E4. \uBD84\uB958:\uC790\uC804 \uBD84\uB958:\uC2DC\uAC04"@ko . "\uC790\uC804 \uC8FC\uAE30"@ko . .