" This course covers the fundamentals of astrodynamics, focusing on the two-body orbital initial-value and boundary-value problems with applications to space vehicle navigation and guidance for lunar and planetary missions, including both powered flight and midcourse maneuvers. Other topics include celestial mechanics, Kepler's problem, Lambert's problem, orbit determination, multi-body methods, mission planning, and recursive algorithms for space navigation. Selected applications from the Apollo, Space Shuttle, and Mars exploration programs are also discussed."

Satellites may be used to transmit information over large distances.

A Dynamic proposal between the National Aeronautics and Space Administration and the National Polar Orbiting Environmental Satellite System Integrated Program Office. A project to bridge or link between the operations of the Earth Observing System AM-1 and the PM-1 Spacecraft and the National Polar Orbiting Environmental Satellite System Spacecraft (NPOESS)

This site allows users to browse Earth science-themed photographs including 3-D images, historic NASA photographs, and images from satellites and manned space missions.

Criss-crossing the world below at nearly 17,000 miles per hour, ICESat is measuring the Earth from space with unprecedented accuracy. ICESAT measures the Earth by shining pulses of green and infrared light from one of its three on-board lasers. Although the major goal of ICESATs mission is to observe ice near the poles, the satellite takes measurements continuously around the entire globe, providing valuable information about our planets clouds, oceans, mountains, forests, and fields.

In this role-playing activity, students learn how cellular phone service works, its advantages and its limitations. Students also learn about the advantages and limitations of satellite phone service. Phone communication involves many aspects of science, math and engineering, and this activity conveys to students how these technologies help people to stay better connected. Students use what they learn to understand what communication options might be available for Maya and her parents, Spacewoman Tess and Spaceman Rohan.

In past times, ocean navigators tossed a piece of wood over the side of their ships and noted how long until the ship passed the wood. They used this time measurement and the length of the ship to calculate their speed and estimate how far they had traveled. In this activity, students act the part of a GPS signal traveling to the receiver to learn how travel time is converted to distance.

How do we communicate with each other? How do we communicate with people who are close by? How do we communicate with people who are far away? In this lesson, students will explore the role of communications and how satellites help people communicate with others far away and in remote areas with nothing around (i.e., no obvious telecommunications equipment). Students will learn about how engineers design satellites to benefit life on Earth. This lesson also introduces the theme of the rockets curricular unit.

In this lesson, students learn about the physical properties of the Moon. They compare these to the properties of the Earth to determine how life would be different for astronauts living on the Moon. Using their understanding of these differences, they are asked to think about what types of products engineers would need to design for us to live comfortably on the Moon.

Introduces the concepts and applications of navigation techniques using celestial bodies and satellite positioning systems such as the Global Positioning System (GPS). Topics include astronomical observations, radio navigation systems, the relationship between conventional navigation results and those obtained from GPS, and the effects of the security systems, Selective Availability, and anti-spoofing on GPS results. Laboratory sessions cover the use of sextants, astronomical telescopes, and field use of GPS. Application areas covered include ship, automobile, and aircraft navigation and positioning, including very precise positioning applications.

Students learn about the Earth's only natural satellite, the Moon. They discuss the Moon's surface features and human exploration. They also learn about how engineers develop technologies to study and explore the Moon, which also helps us learn more about the Earth.

Find out more about how satellites help us study Earth from space and demonstrate how satellite pictures and information are transmitted from space to Earth.

Learn more about how many satellites NASA uses to study Earth and demonstrate how satellites stay in orbit around Earth.

Learn more about why NASA studies Earth from space and analyze satellite pictures of Earth from space.

For thousands of years, navigators have looked to the sky for direction. Today, celestial navigation has simply switched from using natural objects to human-created satellites. A constellation of satellites, called the Global Positioning System, and hand-held receivers allow for very accurate navigation. In this lesson, students investigate the fundamental concepts of GPS technology trilateration and using the speed of light to calculate distances.

This course introduces theoretical and practical principles of design of oceanographic sensor systems. Topics include: transducer characteristics for acoustic, current, temperature, pressure, electric, magnetic, gravity, salinity, velocity, heat flow, and optical devices; limitations on these devices imposed by ocean environments; signal conditioning and recording; noise, sensitivity, and sampling limitations; and standards. Lectures by experts cover the principles of state-of-the-art systems being used in physical oceanography, geophysics, submersibles, acoustics. For lab work, day cruises in local waters allow students to prepare, deploy and analyze observations from standard oceanographic instruments.

This unit teaches students how and why engineers design satellites to benefit life on Earth as well as allows students an opportunity to explore motion, rockets and rocket motion. Students discover that the motion of all objects including the flight of a rocket and even the movement of a canoe is governed by Newton's three laws of motion. Space exploration is a huge consideration for aerospace engineers, and this unit introduces students to the challenges of getting into space for the purpose of exploration. The ideas of thrust, weight and control are covered, allowing students to fully understand how and why rockets are designed with these concepts in mind. Also, students learn about the engineering design process and re-engineering as they design and build their own rockets after learning how and why the experts make specific engineering choices. Lastly, students explore the concept of triangulation that is used in navigation satellites and global positioning systems designed by engineers. And, by investigating these technologies, they learn how people can determine their position or the location of someone else.

Students use satellite tracking software available on the Internet to monitor a very large satellite, the International Space Station. Using information from this online resource, students predict and graph the motion of the space station at their location and create a 3-D display of its path through the sky.

Space System Architecture and Design incorporates lectures, readings and discussion on topics in the architecting of space systems. The class reviews existing space system architectures and the classical methods of designing them. Sessions focus on multi-attribute utility theory as a new design paradigm for space systems, when combined with integrated concurrent engineering and efficient searches of large architectural tradspaces. Designing for flexibility and uncertainty is considered, as are policy and product development issues.