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| | Xen (Half-Life) - Wikipedia, the free encyclopedia |
 | | Xen's leader, Nihilanth, is ultimately destroyed by Freeman to put an end to the invasion of Earth, allowing the United States military and the G-Man to invade and seize control of Xen. |
 | | However, given that Xen is comprised of low mass asteroids, it is surprising that there is any appreciable gravitational pull at all, let alone a sufficiently strong pull to retain the breathable atmosphere encountered there. |
 | | The Xen asteroids are home to a wide variety of different plant and animal species, forming a complex ecosystem. |
| en.wikipedia.org /wiki/Xen_(Half-Life) (1678 words) |
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