Many sun protection products already use ascorbic acid to counter the harmful effects of UVA exposure.

许多防晒产品中都用抗坏血酸来对抗在太阳晒后产生的伤害。

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In addition, retinols stimulate collagen helping to counter the effects of aging and sun.

另外，视黄醇能够促进胶原蛋白合成，抗皮肤老化，防紫外线照射。

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In fact, a rarely discernable faint glow known as the gegenschein (German for "counter glow") can be seen 180 degrees around from the Sun in an extremely dark sky.

事实上，在极度黑暗的天空中，与太阳相对的方向上看到的昏暗辉光被称为对日照(德语中的意思是对面的辉光)。

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But there is a way to counter the increasing brightness of the Sun, the scientists believe - just increase the radius of the Earth's orbit!

BBC: Blue Marble Nasa