"Building even a modest lunar habitat to accommodate a small crew would demand megawatt-scale power generation. Solar arrays and batteries alone cannot reliably meet those demands," suggests Dr Sungwoo Lim, senior lecturer in space applications, exploration and instrumentation at the university of Surrey
A viewing spot with the clearest view of the horizon is best, particularly to see Mercury and Venus, which will appear very low in the sky.
。业内人士推荐一键获取谷歌浏览器下载作为进阶阅读
At least 15 killed after military plane carrying banknotes crashes in Bolivia
Get Deal at Best Buy