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

He says that skyscrapers are clearly popular around the world because they provide a huge amount of shelter and use less land space.

VOA: special.2010.03.31

And that's what they're up to - trying to use the rationale of a legitimate space launch for a missile, which is in its foundation a military missile,".

VOA: standard.2009.03.26