The (six or) seven sisters shine : 無料・フリー素材/写真
The (six or) seven sisters shine / theilr
| ライセンス | クリエイティブ・コモンズ 表示-継承 2.1 |
|---|---|
| 説明 | Although the Pleiades are traditionally referred to as the seven sisters (daughters of Atlas in Greek mythology), only six are readily visible to the naked eye. Various hypotheses have been proposed to explain the "lost Pleiad." One suggestion is that the seventh sister is hiding out of shame for being in love with a mortal. Another theory is that an ultramassive white dwarf (GD 50) began its existence as a bright blue star in the cluster, and was gravitationally ejected. One problem with this second theory is that all of this would have happened 60 million years ago, well before humans could exist, let alone count to seven. |
| 撮影日 | 2013-11-07 20:32:56 |
| 撮影者 | theilr |
| タグ | |
| 撮影地 | |
| カメラ | NIKON D300S , NIKON CORPORATION |
| 露出 | f/0 |
| 開放F値 | f/0 |
| 焦点距離 | 0 mm |