教我做作业
1 What difficulties would we find if we tried to communicate by radio with civilisation on planets orbiting even the stars cloest to Earth?
2 Is it likely that a spacecraft from Earth will ever venture out to planets orbiting the cloest stars? Present some calculations to support your answer.
(我不是要翻译啦,我是不会回答,谢谢了)
参考答案:1.面临通讯设备(收音机)对卫星的准确定位;漂浮不定的云层对无线电波的阻挡;太阳离子风所造成的电磁暴对对无线电波的干扰。
2.不太懂你的意思。