Android Eclipse Error parsing XML: not well-formed (invalid token)

would you please help me to find my mistake in this code: it says : error: Error parsing XML: not well-formed (invalid token) i don't know where...

<menu xmlns:android="http://ift.tt/nIICcg"
      xmlns:app="http://ift.tt/GEGVYd"
      xmlns:tools="http://ift.tt/LrGmb4"
      tools:context="chapter.two.hello_world.MainActivity">

<item
    android:id="@+id/menu_add"
    android:orderInCategory="100"        
    android:showAsAction="never"
    android:title="@string/menu_add_planet"/>

<item 
    android:id="@+id/menu_config"
    android:orderInCategory="200"
    android:showAsAction="never"
    android:title="@string/menu_config_planet"/>

<item 
    android:id="@+id/menu_travel"
    android:orderInCategory="300"
    android:showAsAction="never"
    android:title="@string/menu_travel_planet"/>

<item 
    android:id="@+id/menu_atack"
    android:orderInCategory="400"
    android:showAsAction="never"
    android:title="@string/menu_attack_planet"/>

<item 
    android:id="@+id/menu_home"
    android:orderInCategory="500"
    android:showAsAction="never"
    android:title="@string/menu_home_planet"/>

</menu>