Corona
Related Category: Astronomy: General
luminous envelope surrounding the sun, outside the chromosphere. Its density is less than one billionth that of the earth's atmosphere.
Coronal holes are areas where the Sun's corona is darker, colder, and has lower-density plasma than average.
CORONA BOREALIS
Corona Borealis, the Northern Crown, is a lovely semicircle of stars centered in the picture and opening to the left. Alphecca, or Gemma, is the bright star at the Crown's center directly in the middle of the picture.
Coronagraph
A coronagraph is a telescopic attachment designed specifically to block out the harsh, direct light from a star, so that nearby objects can be resolved without burning out the telescope's optics.
Corona Borealis
Please hover over any star to get more information
Corona Borealis is a small constellation in the northern hemisphere. In Latin, its name means the "northern crown.
Corona
From LoveToKnow 1911
CORONA (Lat. for "crown"), in astronomy, the exterior envelope of the sun, being beyond the photosphere and chromosphere, invisible in the telescope and unrecognized by the spectroscope, ...
Corona
The outermost layer of the Sun is known as the corona. Due to its low density of particles (roughly 10-16 grams per cubic centimeter) we can see right through it, and the underlying chromosphere, ...
Corona Australis
Transit Date of principal star:
9 July
Corona Australis is a small compact constellation nestled between Sagittarius and Scorpius, just east of Scorpion's stinger.
Coronal Holes These are regions where the corona is dark. They are often found at the Sun's poles, and are associated with open magnetic field lines. Most of the solar wind originates from these holes in the corona.
corona
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Corona Austrina
Abbreviation: CrA
Genitive: Coronae Austrini
Translation: The Southern Crown
Peoria Astronomical Society Corona Austrina Page
Interactive star chart (Java applet) ...
R Coronae Australis
S. Van Dyk, IPAC (2MASS Atlas Image Gallery)
Herbig Ae/Be star, R Coronae Australis -- larger image.
(See a Digitized Sky Survey image of R CrA from
the Nearby Stars Database.) ...
Corona Extra, their most popular brand, is reputedly the number-one selling beer in Mexico, as well as the number one imported beer in the US.
Corona Australis, the southern crown:
One of the most difficult of the ancient constellations to see from the United States.
Definition: coronagraph: A special telescope which blocks light from the disk of the Sun in order to study the solar atmosphere. See the image on the right for more information.
Space Tragedies9 Planets in Nine DaysAstronomy 101
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Corona
Wikipedia, the free encyclopedia - Cite This Source
A corona is a type of plasma "atmosphere" of the Sun or other celestial body, extending millions of kilometres into space, most easily seen during a total solar eclipse, ...
Corona Australis
Abbreviation: CrA English name: Southern Crown Coordinates see Stellar data
Particulars: ...
Coronagraphs allow us to see only the outer parts of the corona, because the instrument blocks our view of the inner corona. X-ray images can show us the parts closer to the Sun, because there's no need to block out the solar disk.
More info: ...
Corona Australis was known to the Greeks not as a crown but as a wreath, which is how it is depicted on old star maps. Aratus did not name it as a separate constellation but referred to it as a circlet of stars beneath the forefeet of Sagittarius.
Corona. Another important set of unknown lines revealed during an eclipse came from the corona, and so its source element was called coronium.
Selu Corona
Located in Terra, Corona measures 350 km (210 mi) in diameter. are circular to elliptical features marked by a ring of concentric ridges, and are thought to result from the flow of heat in the planet's interior.
Julian Corona, MUST Participant
01.05.11
The headband that Julian Corona helped design and build records EEG data and sends it to a computer to be recorded. Image Credit: Julian Corona ...
The Solar Corona, as seen in a
total eclipse
The problem is, no one can really explain how this corona exists. Even if the temperature in the core of the Sun does reach 15 million degrees, it drops to a mere 5000 degrees at the surface.
Objects in Corona Australis
AAT 73 The Corona Australis reflection nebula
UKS 37 The extended tail of the CrA reflection nebula
UKS 37a The CrA reflection nebula ...
Alphekka (Alpha Coronae Borealis)
Map © 2003 Torsten Bronger
Also known as Gemma, the brightest star in the constellation Corona Borealis.
The surface regions of the Sun are linked to its outer atmosphere, or corona, by spicules - towering fountains of plasma which can stretch upwards for 32,000 miles.
Coronal Mass Ejection (CME). An observable change in coronal structure that occurs on a time scale between a few minutes and several hours, and involves the appearance of a new discrete, bright, ...
Coronal Loops
Coronal loops are found around sunspots and in active regions. These structures are associated with the closed magnetic field lines that connect magnetic regions on the solar surface.
Coronal Hole is an area of the corona which appears dark in X-rays and ultraviolet light. The holes usually are located at the poles of the Sun, but can occur at other places.
Corona Borealis
Map created in Guide 7.0 with the figure outline based on Johannes Hevelius' Uranographia (1690). Click on the object's name to access its image or click on the name of adjacent constellation to see its map.
CORONA
The very hot outermost layer of a star's atmosphere. Our Sun's corona can only be seen during a total solar eclipse.
COSMONAUT
An astronaut from the former Soviet Union or the current republic of Russia.
Corona is the outermost layer of the Sun. Similar to the chromosphere, usually it is only visible during total solar eclipse. Its density is very low and it can reach out to more than 10 solar radii. Its temperature is about 106K.
corona -- the upper atmosphere of the Sun that appears as a halo around the Sun during a total eclipse.
coronagraph
an instrument designed to block light from the solar disk, allowing the corona to be observed
coronagraphic mask ...
Coronal Ejection and Grazing Comet
We now recognize that these new spectral lines do not indicate any new kind of atom. Coronium does not exist.
Corona--see solar corona.
Coronal mass ejection (CME)--a huge cloud of hot plasma, occasionally expelled from the Sun.
Corona- the high-temperature outermost atmosphere of the sun, visible from Earth only during a total solar eclipse
Coronagraph- a special telescope which blocks light from the disk of the Sun in order to study the faint solar atmosphere ...
Coronal Mass Ejection: The mass ejected from the Sun due to a solar flare.
Coronary thrombosis is a form of thrombosis affecting the coronary circulation. It is associated with stenosis subsequent to clotting. The condition is considered as a type of ischaemic heart disease....
corona
The uppermost level of the solar atmosphere, characterized by low densities and high temperatures (> 1,000,000 degrees K).
Coronagraph
A telescope designed to photograph the inner corona of the sun.
Coronal Hole ...
Corona
the outermost layer of the solar atmosphere. The corona consists of a highly rarefied gas with a low density and a temperature greater than one million degrees Kelvin. It is visible to the naked eye during a solar eclipse.
corona
The thin and hot upper atmosphere of the Sun, visible only with special filters or during a total solar eclipse.
Corona - A type of surface feature of Uranus's satellite Miranda. Coronae consist of parallel ridges and troughs producing a striped appearance. Coronae have sharp boundaries.
Coronagraph. An instrument that allows study of the Sun's inner corona at times of non-eclipse.
CORONA1 - Extended outer atmosphere of the Sun. The glow of the corona is a million times less bright than that of the photosphere; it can only be seen when the disk of the Sun is blocked during a total solar eclipse, or by using a cchoronagraph, ...
Corona
Outermost atmosphere of the Sun immediately above the chromosphere, consisting of hot (1-2 × 106 K), low-density (about 10-16 g cm-3) gas that extends for millions of miles from the Suns's surface.
Corona
The outer most layer of the Sun's atmosphere is the Corona. While this is a rather large region in terms of how far it extends, it is rather thin and diluted (of very low density).
Corona Australis (Southern Crown)
No Saint given
Origin of the constellation: Ancient Greece (Ptolemaeus) ...
CORONAL MASS EJECTION
Coronal mass ejections (CME's) are huge, balloon-shaped plasma bursts that come from the Sun.
R Coronae Borealis Stars
Unlike most variable stars, R Coronae stars spend most of their time at maximum brightness but sometimes decrease in brightness by up to 9 magnitudes at irregular intervals.
The Corona.
The outer solar atmosphere, which extends for several solar radii from the disk of the sun, is the corona. All the structural details in the corona are due to the magnetic field.
Solar Corona
The "atmosphere" of the sun is another target of great interest which can be observed by Radio Science when a spacecraft is near superior conjunction.
Coronal loops, immense coils of hot gas on the surface of the Sun, vibrate wildly after the blast wave from a solar flare hits them. However, their dance is quickly squelched by resistance from the Sun's outer atmosphere (corona).
Corona
The outermost layer of the atmosphere of a star, including the Sun. The corona is visible during a solar eclipse or when special adapters or filters are attached to a telescope to block the light from the star's central region.
Coronagraph An instrument that makes it possible to observe the corona at times other than during an eclipse. A simple lens focuses the Sun onto a disk that blocks the light from the solar disk, providing an artificial eclipse.
Corona Borealis
Abbreviation: CrB
Genitive: Coronae Borealis
Translation: The Northern Crown
Interactive star chart (Java applet) ...
Corona Borealis(northern crown), Corvus(crow), Crater(cup), Crux(southern cross), Cygnus(the swan),
Delphinus(dolphin), Dorado(goldfish), Draco(dragon), Equuleus(little horse), Eridanus(river), ...
Corona Borealis, the Northern Crown
Variable Stars
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corona
The Sun's pearly white outer layer of gas, which extends more than a million kilometres; it is visible only during an eclipse.
cosmos ...
 See also: Sun, Solar, Earth, Light, Star
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