kosmički zraci

kosmički zraci

Extremely high-energy subatomic particles that continuously bombard Earth from all directions. Most cosmic rays hit and break up atomic nuclei in Earth's upper atmosphere. Airless bodies are not protected and their surfaces (asteroids, for example) are exposed.

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Bransch/domän: Astronomy
Category: Planetary science
Company: PSRD
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x-zraci

Astronomy; Mars

Very short wavelength radiations beyond the ultraviolet in the spectrum, which are about one ten-thousandth as long as the visible violet and are extremely penetrating.

x-zraci

Art history; Visual arts

A photograph using an x-ray. X-ray images have been used to identify what lies under the surface of a painting, including prior works or studies and sketches.

X-zraci, rendgenski zraci

Chemistry; General chemistry

A very high energy form of electromagnetic radiation (though not as high energy as gamma rays ). X-rays typically have wavelengths from a few picometers up to 20 nanometers. ...

gama zraci

Chemistry; General chemistry

A very high energy form of electromagnetic radiation , typically with wavelengths of less than 3 pm. Gamma rays are produced by certain nuclear decay processes, and are used to ...

Ceres

Astronomy; Planetary science

The largest of the known asteroids; a dwarf planet. Also called 1 Ceres because it was the first asteroid to be discovered (by Piazzi in 1801).

Jarkovski efekat

Astronomy; Planetary science

An explanation for the shift in an asteroid's orbit around the Sun due to a thermal thrust caused by the body's uneven heating by sunlight. The illuminated side of an asteroid ...

Viking

Astronomy; Planetary science

U. S. Mission to Mars, composed of two spacecraft, launched in 1975. Viking 1 and Viking 2 both consisted of an orbiter and a lander. Primary mission objectives were to obtain ...

sublimacija

Astronomy; Planetary science

Phase transformation from solid to gas.

Misija Stardust

Astronomy; Planetary science

The fourth in NASA's Discovery program of low-cost spacecraft with highly focused science goals, Stardust was comprised of a spacecraft and capsule that completed a seven-year, ...

Solarna i heliosfericna observatorija

Astronomy; Planetary science

A project of international collaboration between ESA and NASA to study the Sun from its deep core to the outer corona and the solar wind. SOHO was launched in December, 1995. SOHO ...

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Bransch/domän: Geography Category: Countries & Territories

Sveta gora

Greek mountain and pilgrimage site, known as the birthplace of early Christian Orthodox monasticism, housing around 20 Eastern Orthodox monasteries. ...