| For more information and source, | The most important reasons are for scientific research and the interest of humans to learn more about outer space |
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| Space exploration is a term which describes searching outer space |
Space is usually regarded as being completely empty.
| For centuries, humans had dreamt of reaching outer | With no air to scatter sunlight and produce a blue sky, space appears as a black blanket dotted with stars |
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| February is the only month that is 28 days long in common years and 29 days | If playback doesn't begin shortly, try restarting your device |
Some calendars have 4 months that are 30 days long and 7 months that are 31 days long.
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