What do you tink about Space..?What are things that strikes you when i asked this question.?
Space is something called "unlimited expanse"

Some intersting facts that you may need to know about

In space, no one can hear you scream. This is because there is no air in space – it is a vacuum. Sound waves cannot travel through a vacuum.

The 'Outer space' begins from about 200 km above the Earth surface, where the shell of air around our planet disappears. With no air to scatter sunlight and produce a blue sky,and hence space appears as a black blanket dotted with stars.

Some says that Space is usually considered as being completely empty.

                                        Click to view full image.
But according to scientist's its not true.
They Say,
The vast gaps between the stars and planets which are filled with huge amounts of thinly spread gas and dust. Even the emptiest parts of space contain at least a few hundred atoms or molecules per cubic metre.

Space is also filled with many forms of radiation that are dangerous to astronauts. Much of this infrared and ultraviolet radiation comes from the Sun. High energy X-rays, gamma rays and cosmic rays – particles travelling close to the speed of light – arrive from distant star systems.