Due to its dense atmosphere, heat that reaches Venus from the sun can't escape into space. Surface temperatures can reach around 500 degrees Celsius -- hot enough to melt lead!

四者中拥有最高温度的是金星，而原因很简单——由于有稠密的大气层，金星从太阳吸收的热量无法“逃”到太空中，它的表面温度高达500摄氏度——足以使铅熔化。

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Just glimpsing the Venusians awakened feelings they never known. They fell in love and quickly invented space travel and flew to Venus.

久远以前的某一天，火星人从天文望远镜中发现金星人，仅只一瞥，就觉得与金星人素未相识，但他们互相仰慕，火星人受邀做了一趟太空之旅，飞向金星。

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The most recent of these, Venus Express, was launched by the European Space Agency in 2005.

执行最近一次探访的金星快车号飞船是由欧洲航天局在2005年发射升空的。

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The transit of Venus can't be observed with the Hubble Space Telescope because the extreme brightness of the sun would destroy the telescope and its instruments.

CNN: A transit of Venus, an age of wondrous science

In 1962, the Mariner II space probe began sending back to Earth man's first information from another planet, Venus.

CNN: Monday,

Opportunities to photograph Mercury from space are also limited because light sensitive equipment, such as the Hubble Space Telescope, are not allowed to look at objects close to the Sun, such as Mercury or Venus.

BBC: Close up on Mercury