chromospheric flare
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Corona — This article is about the astronomical term. For other uses, see Corona (disambiguation). During a total solar eclipse, the solar corona can be seen with the naked eye. A corona is a type of plasma atmosphere of the Sun or other celestial body,… … Wikipedia
sun — sunlike, adj. /sun/, n., v., sunned, sunning. n. 1. (often cap.) the star that is the central body of the solar system, around which the planets revolve and from which they receive light and heat: its mean distance from the earth is about 93… … Universalium
List of radio propagation topics — This is a list of radio propagation terms. NOTOC A a index A index aa index active prominence active prominence region (APR) active region active surge region (ASR) active dark filament (ADF) AE index Air Force Geophysics Laboratory (AFGL) arch… … Wikipedia
Coronal loop — Typical coronal loops observed by TRACE Coronal loops form the basic structure of the lower corona and transition region of the Sun. These highly structured and elegant loops are a direct consequence of the twisted solar magnetic flux within the… … Wikipedia
Sun — This article is about the star. For other uses, see Sun (disambiguation). The Sun … Wikipedia
61 Cygni — Not be confused with 16 Cygni, a more distant system containing two G type stars harboring the gas giant planet 16 Cygni Bb. Starbox begin name=61 CygniStarbox image caption=Expanded view of the star field around 61 Cygni. This system is located… … Wikipedia
Proxima Centauri — Coordinates: 14h 29m … Wikipedia
Rocket Astrophysical Observatories K-2, K-3 and K-4 — Rocket astrophysical observatories launched in Soviet Union in 1960s and early 1970s under the direction of Grigor Gurzadyan of Byurakan Observatory in Armenia, for the study of the Solar ultraviolet and X ray emission. Ballistic rockets R 5 were … Wikipedia
Solar wind — For other uses, see Solar wind (disambiguation). The solar wind is a stream of charged particles ejected from the upper atmosphere of the Sun. It mostly consists of electrons and protons with energies usually between 1.5 and 10 keV. The stream of … Wikipedia
Variable star — A star is classified as variable if its apparent brightness as seen from Earth changes over time, whether the changes are due to variations in the star s actual luminosity, or to variations in the amount of the star s light that is blocked from… … Wikipedia
Moreton wave — Animation of a Moreton wave which occurred on December 6, 2006 A Moreton wave is the chromospheric signature of a large scale solar coronal shock wave. Described as a kind of solar tsunami ,[1] they are generated by solar flares. They are named… … Wikipedia