资讯

Pale Green Dot? Study Claims Earth's Oceans Were Not Always Blue
The oceans wore a green hue billions of years ago and if cameras existed, Earth would have looked emerald green from up above ...
来自MSN1 个月
Pale Blue Dot: The iconic Valentine's Day photo of Earth turns 35 today — and you're ...
On Valentine's Day 1990, NASA's Voyager 1 spacecraft snapped ... an unrelenting sea of darkness — a "Pale Blue Dot" lost in a void. Carl Sagan — the astronomer, author, and science ...