 |
| 我的日历 |
| |
|
| 分类日志 |
| |
|
| 友情链接 |
|
|
| 最新评论 |
|
|
| 搜索日志 |
|
|
| 访问计数 |
|
|
| 获取 RSS |
| |
 | |
| |
光污染[Light Pollution] [2005-10-21]
iamet 发表在 ¤〖天文〗
| | The encroachment of bright lights onto astronomical observing sights, increasing the sky brightness and decreasing sensitivity to faint deep-sky objects. |
学好数理化，走遍天下都不怕！ | |
|
|
