SI osnovna jedinica

One of many SI units of measure expressed as relationships of the SI base units. For example, the watt, W, is the SI derived unit of power. It is equal to joules per second. W = ...

neidentifikovani leteći objekat (NLO)

فضاء; رحلة الفضاء

UFOs are unidentified aircraft which are attributed to alien space flight. One supposed UFO halted air traffic at Hangzhou Airport, China, on July 7. The appearance is being ...

svemirski šatl

فضاء; رحلة الفضاء

A reusable spacecraft with wings developed by the U.S. National Aeronautics and Space Administration (NASA) for human spaceflight missions. The first test flight took place in ...

zenit

فضاء; رحلة الفضاء

The point on the celestial sphere directly above the observer. Opposite the nadir.

x-zrak

فضاء; رحلة الفضاء

Electromagnetic radiation in the neighborhood of 100 picometer wavelength.

x-dijapazon

فضاء; رحلة الفضاء

A range of microwave radio frequencies in the neighborhood of 8 to 12 ghz.

težina

فضاء; رحلة الفضاء

The gravitational force exerted on an object of a certain mass. The weight of mass m is mg Newtons, where g is the local acceleration due to a body's gravity.