NASA hopes that Dawn's year long orbit around Vesta will help scientists learn more about the development of the solar system, and how asteroids and other space objects were created.

VOA: special.2011.07.27

Astronomers use the observatory to study the positions and movements of the Earth, sun,moon and other objects in space.

VOA: special.2009.09.21

On Space Invader's Web site, you can see the many other cities where he has placed his art.

VOA: special.2009.04.08

As the American astronauts continued to float through space, they inspected each other and each other's spacecraft.

VOA: special.2009.07.01

Other reasons included a severe climate, and loss of living space and water to farm animals.

VOA: special.2010.06.22

It covers more space with less material than any other building ever designed.

VOA: special.2010.05.30

The other three parts move forward and back through time and space.

VOA: special.2010.01.10

The Endeavour mission includes plans for five space walks to install the Japanese science module and perform other tasks at the space station.

VOA: standard.2009.06.16

As with every float, each square centimeter of space must be covered with flowers or other organic material, including moss,seeds, bark and plant fiber.

VOA: standard.2009.12.30

The seven-member crew of Endeavour is set to deliver the final piece of a Japanese science laboratory and other supplies to the International Space Station.

VOA: standard.2009.06.16

Though he favors an end to the shuttle program, he is upset there will be no other U.S.spacecraft to get astronauts to the Space Station.

VOA: standard.2010.04.15