Solar wind

Solar wind

A stream of charged particles released from the upper atmosphere of the Sun, mostly consisting of electrons and protons with energies usually between 1.5 and 10 keV.

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Industry/Domain: Astronomy
Category: General astronomy
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solar wind

Weather; Meteorology

Stream of ionized gas, mainly hydrogen, continuously flowing outward from the sun, at very high velocity (≈ 400 km s −1 on the average) and with variable intensity. While passing ...

solar wind

Astronomy; Planetary science

Streams of plasma--charged particles (mainly ionized hydrogen and some helium but actually a mixture of all electrons and protons in the Sun)-- ejected from the outer atmosphere ...

solar wind

Physics; Plasma physics

A proton electron gas that streams past the Earth with a mean velocity of 400-500 km/sec and a mean proton and electron density of about 5 cm -3 .

solar wind

Chemistry; Weather; Atmospheric chemistry

The outflow of charged particles from the solar corona into space. Because of the high temperature of the particles of the corona (mostly protons and electrons), they are moving ...

solar wind

Aerospace; Space flight

Flow of lightweight ions and electrons (which together comprise plasma) thrown from the sun.

solar wind

Geography; Physical geography

Mass of ionized gas emitted to space by the Sun. Plays a role in the formation of auroras.

astronomical unit (AU)

Astronomy; General astronomy

Approximately equal to the mean earth-sun distance, which is about 150,000,000 km or 93,000,000 miles. Formally, the AU is actually slightly less than the earth's mean distance ...

celestial coordinates

Astronomy; General astronomy

Any system for locating the positions of objects on the celestial sphere. Various systems are defined, according to the chosen point of observation (the origin) and the plane of ...

distance modulus

Astronomy; General astronomy

The difference between the apparent magnitude of an object, m, corrected for *interstellar absorption, and its absolute magnitude, M. This difference is directly linked to the ...

luminosity class

Astronomy; General astronomy

A classification of stars according to their luminosity, which can vary widely for a given *spectral type. Luminosity class indicates, for example, whether a star is a supergiant, ...

asteroid

Astronomy; General astronomy

Any of the many small rocky or metallic objects in the Solar System, mostly lying in a zone (the asteroid belt) between the orbits of Mars and Jupiter; also known as a minor ...

elliptical galaxy

Astronomy; General astronomy

A type of galaxy with a smooth, featureless circular or elliptical appearance, no spiral arms, and little or no interstellar gas or dust; symbol E. Elliptical galaxies range from ...

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