molekularni oblak

molekularni oblak

Large concentration of gas (roughly 75% hydrogen and 21-24% helium with trace amounts of other molecules), dust, and mineral grains. Our Solar System formed out of one approximately 4. 55 billion years ago.

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Kalbos dalis: noun
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Pramonės šaka / sritis: Astronomy
Category: Planetary science
Company: PSRD
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Ortov oblak

Astronomy; Planetary science

Vast spherical swarm of comets orbiting our Solar System from roughly 2,000 to 100,000 AU. The Oort cloud, while roughly spherical at the largest radius, is wedge-shaped where it ...

Ortov oblak

Aerospace; Space flight

A large number of comets theorized to orbit the sun in the neighborhood of 50,000 AU.

Veliki Magelanov oblak

Aerospace; Space flight

The larger of two small galaxies orbiting nearby our Milky Way galaxy, which are visible from the southern hemisphere.

mali magelanov oblak

Aerospace; Space flight

The smaller of two small galaxies orbiting nearby our Milky Way galaxy, which are visible from the southern hemisphere.

Veliki Magelanov oblak

Aerospace; Space flight

LMC, the larger of two small galaxies orbiting nearby our Milky Way galaxy, which are visible from the southern hemisphere.

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 ...