New satellite images every day. Zoom Earth shows new NASA satellite images every day. Explore satellite and aerial imagery of the Earth in a simple, zoomable interface. Zoom into near-live satellite images from NASA MODIS Terra and Aqua satellites (updated daily), and world maps from Bing Maps. Previously known as Flash Earth.
What is a TCP/IP? TCP/IP, Transmission Control Protocol/Internet Protocol, is a suite of communications protocols used to interconnect network devices on the Internet. TCP/IP implements layers of protocol stacks, and each layer provides a well-defined network services to the upper layer protocol. TCP and IP are the two protocols used by TCP/IP, as well as the (higher) application, (lower) data link and (lower) physical layer protocols.
The TCP/IP network architecture. TCP/IP is a shorthand for the two most important protocols used to make the Internet work. The Internet Protocol (IP) is responsible for transferring these data packets, while the Transmission Control Protocol (TCP) makes sure all packets arrive safely, retransmitting them if necessary. An alternative to TCP is the User Datagram Protocol (UDP), which is an unreliable but fast protocol that is often used for data transfer. The Internet architecture is made up of five layers that work together. These five layers are, from high to low: The Application Layer; The Transport Layer; The Network Layer; The Link Layer; The Physical Layer