The Sun is located in the Milky Way galaxy in a spiral arm called the Orion Spur that extends outward from the Sagittarius arm.

The planetary system we call home is located in an outer spiral arm of the Milky Way galaxy. Our solar system consists of our star, the Sun, and everything bound to it by gravity – the planets …

least twice as much mass in the Milky Way galactic disk as can be accounted for by adding up the mass of all stars and interstellar clouds. While the solar system does not have any detectable …

arguments concerning the size of our own galaxy. Early scientists M5 Orbits the Milky Way questioned whether our galaxy was the universe, or just an undistinguished part of a larger …

that the center of a galaxy’s mass was located where the greatest amount of luminous matter (bright matter—the matter we can see) was found. Our sun, carrying the planets with it, orbits …

Even after the Sun has burned itself out, billions of years from now, vast numbers of our ejected comets will still be wandering our Milky Way Galaxy. Even when all of the stars of the Milky …

I heartfully indicate the support on the sample return mission from Mars, and the indispensable facilities in laboratories. Because the sample return mission is the keys of essential problems …

NASA’s real-time science encyclopedia of deep space exploration. Our scientists and far-ranging robots explore the wild frontiers of our solar system.

NASA Solar System Exploration

As an instructor, she joined the NASA Science Engineering Mathematics and Aerospace Academy Program team in 1999. She has been teaching with them part time ever since. This …