prestupna godina

A quantity introduced by F. W. Bessel in the nineteenth century that has been used into the twentieth century. Bessel introduced a system whereby it would be convenient to ...

svetlosna godina

Astronomia; Planetologia

Distance that light can travel in 1 year. Light travels at a speed of 300,000 km / sec, so this distance is equal to 9. 46 x 10 12 kilometers.

svetlosna godina

Aerospazio; volo spaziale

A measure of distance, the distance light travels in one year, about 63,197 AU.

svetlosna godina

Fisica; Fisica (generale)

The distance traveled by light through empty space in one year, it is equal to 9.46 x 1012 km.

neidentifikovani leteći objekat (NLO)

Aerospazio; volo spaziale

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

Aerospazio; volo spaziale

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

Aerospazio; volo spaziale

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

x-zrak

Aerospazio; volo spaziale

Electromagnetic radiation in the neighborhood of 100 picometer wavelength.

x-dijapazon

Aerospazio; volo spaziale

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

težina

Aerospazio; volo spaziale

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.