来自MSN2 个月
Was Blue Earth once a 'snowball'? Here's the truth of the bluish-green planet
The researchers have unravelled that the blue Earth - which in today's times has green terrains and blue oceans - was once a huge chunk of ice. The scenario of "Snowball Earth" is not some sort of ...
Digital Camera World on MSN14 天
NASA photographs the rare occurrence of the moon crossing the face of the Earth from a ...
The red, green and blue channel images are used in these color images. “Combining three images taken about 30 seconds apart ...