Апполон

Successful US lunar exploration program in which the Apollo spacecraft 1 to 6 were unmanned; 7 to 10 were manned but did not land; and 11, 12 and 14 to 17 landed and returned ...

А тобы

Astronomie; l'astronomie générale

One of about a dozen of the strongest Fraunhofer lines seen in the Solar spectrum, the A band at 7600 angstoms is due to telluric lines of molecular oxygen in the Earth's ...

А жұлдызы

Astronomie; l'astronomie générale

Star with spectral type A in which the spectrum of the Balmer lines of hydrogen attain their greatest strength. Helium lines can no longer be seen. Some metallic lines are ...

Ахиллес

Astronomie; l'astronomie générale

Trojan asteroid (60° ahead of Jupiter. It was the first Trojan to be discovered.

атомдық нөмір (заряд нөмірі)

Astronomie; l'astronomie générale

The number of protons in an atom's nucleus. This determines the type of element.

поляр шұғыласы

Astronomie; l'astronomie générale

the light produced by excited atoms and ions in the upper atmosphere of a planet

азимут

Astronomie; l'astronomie générale

1) Angular distance from the north point eastward to the intersection of the celestial horizon with the vertical circle passing through the object and the zenith. 2) Directional ...