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Winter

Astronomy Wide pairWinter Solstice

Winter solstice
*The solstice that occurs in winter:
** December solstice in the northern hemisphere.
** June solstice in the southern hemisphere.
* Dongzhi (冬至), the solar term used in Asian countries.
* Winter Solstice Festival.

 


WINTER TRIANGLE
The first magnitude stars of the Winter Triangle are all seen in context: Betelgeuse of Orion at right center, Procyon of Canis Minor toward upper left, and Sirius of Canis Major toward lower left.

Winter Solstice
On the northern winter solstice (around the 21st December each year), the Sun reaches its most southerly declination of -23.5 degrees.

Winter Sky
Map created in Guide 7.0 - click on the name of constellation to access its page.

Winter Solstice
As the Earth travels around the Sun in its orbit, the north-south position of the Sun changes over the course of the year due to the changing orientation of the Earth's tilted rotation axes with respect to the .

Winter flounders are highly regarded for their delicious white meat. They are related to lemon sole
Lemon sole ...

Winter is colder because the earth's axis is tilted. Winter occurs for the hemisphere which is tilted away from the sun (the northern hemisphere in January, the southern in July). This has two main effects on the winter hemisphere.

The Winter Solstice
A diagram of how the Sun moves through the sky on the winter solstice.
Click on image for full size ...

The winter sky is the prettiest and most interesting time of year for amateur astronomers in the northern hemisphere.

Nuclear Winter:
Nuclear winter is an the environmental devastation that certain scientists contend would probably result from the hundreds of nuclear explosions in a nuclear war.

After a long wait for Saturn's north pole to emerge from winter, Cassini has captured the most detailed images yet of the curious rotating hexagon structure dancing around the planet's high northern latitudes.

Winter Sky East:
sky view,
reverted sky view,
sky view with inlined constellation ...

winter solstice Point on the ecliptic where the Sun is at its southernmost point below the celestial equator, occurring on or near December 21.

winter
a season that begins around December 21 in the Northern Hemisphere
SEARCH SITE ...

winter solstice
The point on the ecliptic when the Sun is furthest south of the equator, giving the southern hemisphere its longest day of the year (and the shortest day of the year in the northern hemisphere).

winter solstice: The point on the celestial sphere where the sun is farthest south; also, the time of year when the sun passes this point, about December 22, and winter begins in the northern hemisphere.

WINTER SOLSTICE
The solstices are the days when the Sun reaches its farthest northern and southern declinations.

Wintertime is making Pluto warm and expansive!
One might have imagined that a Winter's chill would have brought some shrinkage to Pluto's atmosphere. Not so, according to researchers at the Massachusetts Institute of Technology and others.

Winter Solstice
Orbital mechanics require that the length of the seasons be proportional to the areas of the seasonal quadrants, so when the eccentricity is extreme, the seasons on the far side of the orbit can be substantially longer in duration.

winterhaiku
How to watch the stars from a secluded island
The stars are listening ...

Winter: from the winter solstice to the vernal equinox
In popular parlance, the seasons of the northern hemisphere comprise the following months:
Spring March, April, May ...

As winter passes into spring and summer, the crescent shape slowly shifts toward the south and begins to "stand on its end".

The Winter Star Party is held on West Summerland Key (right next to Big Pine Key) in the Florida Keys. The site features excellent night skies and some of the steadiest viewing in the northern hemisphere.

The Winter Southern Sky (Check the study guide for this lesson)
In this lesson I will teach you the remaining stars and constellations that can be seen from the Northern Hemisphere - PISCIS AUSTRALIS, Southern Fish, GRUS, the Crane, CETUS, ...

The winter half is shorter, or
The Earth moves faster in the winter half ...

Emily Winterburn, Curator of Astronomy, Royal Observatory, England
The Strange and Dangerous Voyage of Captain Thomas James by Captain James (1633)
Another November Feature: High-Flying Moon! ...

In the winter months the Giraffe appears upside down. You might want to study Camelopardalis in the summer, when it's right side up.

In the winter of 2002, Stuart thought that it would be a good idea to combine the two sites, for SPACE was never very popular, but Journey Through the Galaxy (JTG) was.

In the winter of 1504, astronomer Nicolaus Copernicus watched as the planets Mars, Jupiter, and Saturn grouped close together in the evening sky.

nuclear winter - (n.)
A period of dark, cold weather that may be caused by the dust and smoke entering the atmosphere from the explosion of nuclear bombs.
nucleon number - (n.) ...

During my winter break in the '06-'07 school year, my mother mentioned to me, very casually, that NASA was hiring interns for the coming summer.

Giuliatti Winter, S.M., C.D. Murray and M.K. Gordon, Perturbations to Saturn's F-ring strands at their closest approach to Prometheus, Planetary & Space Science 48, 817, 2000.
1997 ...

4 - Winter 1985-86
Next Stop: Uranus
On January 24, 1986. the aging but still active Voyager 2 spacecraft will become the first mission to fly by the seventh planet in our solar system.

The severe winters affected human life in ways large and small. The population of Iceland fell by half, but this was perhaps also due to fluorosis caused by the eruption of the volcano Laki in 1783.

Southern midwinter solstice, sun furthest north at 5.17am, NZST (Jun 21, 17:17UT).
June 23
Moon at last quarter 11.48pm NZST (11:48 UT).

Star map for winter evening in the Northern hemisphere
This star map was produced by the Star Maps on demand service of Mount Wilson Observatory. Another source of star maps is the Starry Night program for Windows and Macintosh computers.

Look up in the winter sky and there he is- Orion The constellation of the hunter- standing tall and easily recognized.
Near the river Eridanus with his hunting dogs Canis Major-the big or great dog, and Canis minor-the lesser dog.

winter solstice (NASA SP-7, 1965) 1. That point on the ecliptic occupied by the sum at maximum southerly declination. Sometimes called December solstice, first point of Capricornus .
2.

When the Sun is at the solstice point we have either the longest amount of daylight (summer: June 21 for northern hemisphere) or the shortest amount of daylight (winter: December 21 for northern hemisphere).

Capricornus Sagit- the sign of the winter solstice, is plausibly connected tarius. with the caprine nurse of the young solar god in Oriental legends, of which that of Zeus and Amalthia is a Capri- variant.

This simulates winter in the northern hemisphere; summer in the southern hemisphere. For illustrative purposes, let's consider Alaska. You've heard of Alaska's nickname, "land of the midnight sun?" That's an apt description-but only in summer.

"Sometimes", says Waltemath, "it shines at night like the Sun" and he thinks this moon was seen in Greenland on 24 October 1881 by Lieut Greely, ten days after the Sun had set for the winter.

Chen of Sulzer Brothers Limited, Winterthur, Switzerland, that we made an arithmetical error of a factor 10 in our estimate of the mass of the central object... There is no longer such an interesting coincidence...

At this time it gets pretty hot in the south (where it is summer), while in the north it isn't such a harsh winter.

January-February Big Winter Moon, Chaste Moon, Ice Moon, Old Moon, Wolf Moon February-March Chaste Moon, Hunger Moon, Snow Moon, Storm Moon March-April Crow Moon, Hare Moon, Lenten Moon, Paschal Moon, Sap Moon, ...

Below this so-called polar hood, a thin cap of carbon dioxide frost is deposited during autumn and winter. By late winter, the cap may extend down to latitudes of 45°.

Due to the angle of the planet's axis, the poles are subjected to 42 years of savage winter followed by a summer of the same length where they face the Sun.

Sirius is also the lower left member of the "Winter Triangle" of first magnitude stars, whose other components are Procyon (Alpha Canis Minoris) at upper left and Betegeuse (Alpha Orionis) at right center.

This shuttle image shows a winter view of the Mistastin Crater, a heavily eroded complex structure.

SOLSTICE - Position of the sun when farthest north (summer solstice) or farthest south (winter solstice). The solstices occur because the rotation axis of the Earth is tilted by an angle of 23.5° from the vertical.

The two points on the ecliptic which are farthest away from the equator are the summer solstice and winter solstice.

Casting of the characters was not a problem, apart from the lead role of Captain Pike (still known as "Captain April" at this point, later renamed "Captain Winter" before finally choosing "Pike") which Roddenberry convinced Jeffrey Hunter to play.

CCD image of Mars during late northern winter indicating presence of polar hood and surface albedo features leaking through the green and blue filters. CCD image by Don Parker using 41-cm Newtonian.

The Oxford Pocket Dictionary of Current English entry for winter solstice
The Oxford Pocket Dictionary of Current English entry for summer solstice
The Oxford Pocket Dictionary of Current English entry for solstice ...

On the winter solstice the sun is directly overhead on the tropic of capricorn latitude line. Between the summer and winter solstices the sun slowly shifts southwards latitude line by latitude line from 23.5 degrees north of the equator to 23.

Canada is not the best place to be "doing" astronomy in the wintertime. The cold winter temperatures make our hobby unpleasant, difficult, and sometimes dangerous.

It is a vertex of the Winter Triangle asterism. It is a red supergiant star about 600 lightyears distant, is shown here in this Hubble Space Telescope image which represents the first direct picture of the surface of a star other than the Sun.

It is also enclosed on three sides by the bright stars of the Winter Triangle (Sirius, Procyon and Betelgeuse).

This yellowish star is also part of the Winter Triangle. Procyon is a relatively close star; it is only about 11.4 light years from us. Procyon is about as seven times more luminous than our Sun.

National year-round daylight saving time was adopted as a fuel-saving measure during the energy crisis of the winter of 1973-74. In late 1974, standard time was reinstituted for the winter period.

See also: Earth, Time, Year, Light, Sun