| 20:38:21 | ◀︎ | Wrinkled Mercury's shrinking history |
הכותרות שעניינו הכי הרבה גולשים בדף זה
16/03/14 20:38
מאת BBC News
The planet Mercury is about 7km smaller today than when its rocky crust first solidified over four billion years ago - a greater degree of shrinkage than previously recognised.