unable to install moveit on kinetic

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Hey, I am a beginner, I am trying to install moveit on kinetic and I am facing problems. I am using virtual box for linux and everything worked fine but when tried to install moveit, I faced a lot of problems.

when I tried : sudo apt-get install ros-kinetic-moveit I got following issue

Err:1 http://packages.ros.org/ros/ubuntu xenial/main amd64 libfcl0.5 amd64 0.5.0-3osrf1~xenial3
  Temporary failure resolving 'packages.ros.org'
Err:2 http://packages.ros.org/ros/ubuntu xenial/main amd64 libfcl-0.5-dev amd64 0.5.0-3osrf1~xenial3
  Temporary failure resolving 'packages.ros.org'
Err:3 http://packages.ros.org/ros/ubuntu xenial/main amd64 ros-kinetic-controller-manager-msgs amd64 0.13.0-0xenial-20180222-201631-0800
  Temporary failure resolving 'packages.ros.org'
Err:4 http://packages.ros.org/ros/ubuntu xenial/main amd64 ros-kinetic-object-recognition-msgs amd64 0.4.1-0xenial-20180222-205043-0800
  Temporary failure resolving 'packages.ros.org'
Err:5 http://packages.ros.org/ros/ubuntu xenial/main amd64 ros-kinetic-octomap-msgs amd64 0.3.3-0xenial-20180222-204232-0800
  Temporary failure resolving 'packages.ros.org'
Err:6 http://packages.ros.org/ros/ubuntu xenial/main amd64 ros-kinetic-moveit-msgs amd64 0.9.1-0xenial-20180222-205707-0800
  Temporary failure resolving 'packages.ros.org'
Err:7 http://packages.ros.org/ros/ubuntu xenial/main amd64 ros-kinetic-urdfdom-py amd64 0.3.3-0xenial-20180222-191425-0800
  Temporary failure resolving 'packages.ros.org'
Err:8 http://packages.ros.org/ros/ubuntu xenial/main amd64 ros-kinetic-srdfdom amd64 0.4.2-1xenial-20180222-231036-0800
  Temporary failure resolving 'packages.ros.org'
Err:9 http://archive.ubuntu.com/ubuntu xenial/universe amd64 libccd2 amd64 2.0-1
  Temporary failure resolving 'archive.ubuntu.com'
Err:10 http://packages.ros.org/ros/ubuntu xenial/main amd64 ros-kinetic-moveit-core amd64 0.9.11-0xenial-20180223-010000-0800
  Temporary failure resolving 'packages.ros.org'
Err:11 http://archive.ubuntu.com/ubuntu xenial/universe amd64 libccd-dev amd64 2.0-1
  Temporary failure resolving 'archive.ubuntu.com'
Err:12 http://packages.ros.org/ros/ubuntu xenial/main amd64 ros-kinetic-moveit-ros-perception amd64 0.9.11-0xenial-20180309-123628-0800
  Temporary failure resolving 'packages.ros.org'
Err:13 http://archive.ubuntu.com/ubuntu xenial/main amd64 libglew-dev amd64 1.13.0-2
  Temporary failure resolving 'archive.ubuntu.com'
Ign:14 http://archive.ubuntu.com/ubuntu xenial/main i386 python-bs4 all 4.4.1-1
Err:15 http://packages.ros.org/ros/ubuntu xenial/main amd64 ros-kinetic-moveit-ros-planning amd64 0.9.11-0xenial-20180309-131351-0800
  Temporary failure resolving 'packages.ros.org'
Ign:16 http://archive.ubuntu.com/ubuntu xenial/main i386 python-html5lib all 0.999-4
Err:17 http://packages.ros.org/ros/ubuntu xenial/main amd64 ros-kinetic-warehouse-ros amd64 0.9.0-0xenial-20180223-005508-0800
  Temporary failure resolving 'packages.ros.org'
Err:18 http://archive.ubuntu.com/ubuntu xenial/main amd64 python-lxml amd64 3.5.0-1build1
  Temporary failure resolving 'archive.ubuntu.com'
Err:19 http://packages.ros.org/ros/ubuntu xenial/main amd64 ros-kinetic-moveit-ros-warehouse amd64 0.9.11-0xenial-20180309-133506-0800
  Temporary failure resolving 'packages.ros.org'
Ign:20 http://archive.ubuntu.com/ubuntu xenial/universe i386 python-pyassimp all 3.2~dfsg-3
Err:21 http://packages.ros.org/ros/ubuntu xenial/main amd64 ros-kinetic-moveit-kinematics amd64 0.9.11-0xenial-20180309-133451-0800
  Temporary failure resolving 'packages.ros.org'
Err:14 http://archive.ubuntu.com/ubuntu xenial/main i386 ...