介绍宇宙的英文文章
Space radiation preferentially destroys specific forms of amino acids, the most realistic laboratory simulation to date has found. The work suggests the molecular building blocks that form the left-handed proteins used by life on Earth took shape in space, bolstering the case that they could have seeded life on other planets.
有关太空的英语文章
Our Place In Space
There are approximately four hundred million galaxies in the universe. We can see only a small part of our galaxy.This is the Milky Way.
There are over three billion stars in the Milky Way.The sun is one of the stars.There are nine planets around the sun.
The Earth is the third planet from the sun.The Earth has one natural satellite--moon.The moon is only a quarter of the size of the Earth.
