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Sunrise is the instant at which the upper edge of the Sun appears above the horizon in the east.

Sunrise is the time at which the leading limb of the first rises above the .

Before Sunrise
Before Sunrise (1995) is a film drama written and directed by Richard Linklater. It is about a pair of students who meet on a train headed to Vienna.

How do sunrise and sunset times change with altitude?
Hi, I am a professional airline pilot and an amateur astronomer and would appreciate it if could provide me with a formula or method in how to calculate the affect of altitude on sun set/rise ...

Happy autumnal equinox: here's a year of sunrises
At 09:05 UTC (05:05 Eastern US time) this morning, the position of the center of the Sun's disk, moving south, crossed the celestial equator on the sky.

Sunrise, Sunset
Who hasn't enjoyed watching a sunset as the Sun's red disk sinks below the horizon. Why does the Sun now appear red?

Sunrise, Sunset: Apparent Motion of the Sun
Identify the Sun as the source of Earth's light.
Observe and describe changes in the Sun's altitude and position.
Recognize that day and night are determined by our view of the Sun.

Sunrise at the South Pole
Today's autumnal equinox heralds the dawn of a new day at the South Pole as Earth joins three other planets in the solar system where it is autumn in the northern hemisphere.
Just Passing By Earth ...

sunrise, sunset: the first (last) appearance of the sun above the horizon each day. Civil ~ occurs when the sun's upper limb appears on the horizon. Note that astronomers define the rising of an object as an altitude of 0.

Sunrise -- For technical definition, please follow this link to the U.S. Naval Observatory Astronomical Applications website.

The times at which the apparent upper limb of the Sun is on the astronomical horizon; i.e.

12 : Sunrise or sunset, as seen from the surface of the Moon, appears to us here on Earth as the Moon's ...
Lunar Transient Phenomena (LTP).

A Misty Sunrise Over Olympus Mons
Mars has several other *very* large volcanoes. Some of them are located on top of a big bulge in the side of Mars called the Tharsis Ridge.

Sunrise & Sunset Calendar
Another way of keeping track of the seasons is to watch the sunrise and sunset points on the horizon. The Sun rises and sets at its southernmost point for the year on the day of the Southern solstice.

The phase diagram seems to show that a solar and lunar eclipse should happen every month but eclipses actually happen only twice a year. You can see why if you look at the Moon's orbit from close to edge-on.

Is sunrise any faster in the tropics--or actually slower--or else, latitude really makes no difference? Explain.

During sunrise and sunset, sunlight is attenuated due to Rayleigh scattering and Mie scattering from a particularly long passage through Earth's atmosphere and the direct Sun is sometimes faint enough to be viewed comfortably with the naked eye or ...

Rises at sunrise, transits meridian at noon, sets at sunset
Waxing Crescent ...

* Latest sunrise of the year.
Click here to return to the calendar page.
*William G. Swan stayed aloft for 30 minutes over Atlantic City, N.J., in a glider powered with 10 small rockets (1931) ...

Sacagawea Sunrise
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Search over 100 encyclopedias and dictionaries: ...

Planets Around sunrise or sunset Venus Venus Yes Yes Yes No Strong (or extreme) seasons Yes 1930
Rock Yes Thin The Moon Black No None Light No Craters ...

The time from one sunrise to the next is called a solar day. The time between successive risings of any given star is one sidereal day.

The exact time of sunrise and sunset (and similar data for moonrise and moonset) may be calculated for any date and 22,000 named cities in the United States, or by specifying the latitude and longitude of any location worldwide, using this program.

The site includes a sunrise and sunset time calculator, visibility predictions for the new crescent Moon, maps of forthcoming eclipses and information on UK public holidays.

Define and identify sunrise, day, noon, sunset, and night as the Earth spins.
Grade Level:
Grades 1-3 ...

green flash (NASA SP-7, 1965) A brilliant green coloring of the upper edge of the sun as it appears at sunrise or disappears at sunset when there is a clear, distinct horizon.

But first we need to define "sunrise." The World Almanac defines it as the instant the upper limb of the Sun touches the horizon. By this definition we can't see a sunrise until the Sun has risen after having been completely below the horizon.

The Babylonians and Hindoos began their day at sunrise, the Athenians and Jews at sunset, the ancient Egyptians and Romans at midnight. -- Day blindness. Med. See Nyctalopia.

Since its greatest elongation (the angle made between the sun, the earth, and Venus) is 47, it can never be seen much longer than 3 hr after sunset or 3 hr before sunrise. Venus revolves around the sun at a mean distance of c.

This heliacal rising is the first time in the year when Sirius was seen in the sky just before sunrise. This rising of Sirius (known by the Egyptians as Sothis) signaled the beginning of festivals celebrating fertility and renewal.

nearly an hour before sunrise, Perseus will be due east. The Moon, nearly 40 degrees away, should present a minimal problem. Also, low towards the cast are the planets Venus and Mars huddled close together.

(Do we mean a 24 hour period or do we mean the time between sunrise and sunset?) We usually do not have to define it with great quantitative precision to make use of it.

It started to move away just before sunrise and once Sun cleared horizon, through a narrow gap between layers of clouds, I noticed Venus immediately as a black disk against deep red, deformed face of our Star! ...

It was three hours before the Martian sunrise when it landed. The probe quickly deflated the air bags, then opened up like a flower - each "petal" being a solar panel to generate power. Four hours later, it broadcast a signal to Earth.

Sometimes, at sunrise or sunset, there are flashes of green light visible near the sun. This effect only happens when there are no clouds nearb the sun.

We had stuck something in our arguments to get his attention because, had we maintained the Apollo 8 target for Apollo 10, we would have had a pre-sunrise, quasi-nighttime splashdown. And he'd been nervous about that.

This dust originates from comets and from asteroid collisions, and can sometimes be seen with the naked eye as a triangular glow above the horizon just before sunrise or after sunset.

As it does so, it goes from being the 'Evening star', visible after sunset, to being the 'Morning star', visible before sunrise.

The interval of time preceding sunrise and following sunset (see Sunrise; unset) during which the sky is partially illuminated.

The use of 'East' to mean the 'in' direction (actually 'in' → 'East' → 'sunrise' → 'up') may appear unnecessarily contrived.

It was taken one hour before sunrise on the rover's 63rd martian day, or "sol." The final image is a mosaic of the navigation camera showing a broad view of the sky and the panoramic camera image of Earth.

Some are only seen near the Sun, either around the time of sunrise or sunset (Mercury and Venus are the two that do this - in the animation, the Sun is the yellow dot, Mercury is the red dot, and Venus is the bluish dot.

When the Sun is close to the horizon, such as at Sunrise and Sunset, the light must pass through a much longer path in the atmosphere; more of the blue light is scattered out of this direction, leaving only the red light.

The line of sunrise or sunset on a planet or its satellite. At dawn and dusk when the sun is lowest in the sky (low sun), topographic features cast their longest shadows.

For example, more than 400,000 people gathered for the Sunrise Event on New Year's Day in Busan City, South Korea. In Brazil, the 2009 Brazilian Olympiad of Astronomy and Astronautics saw more than 750,000 students participate from 32,500 schools.

Cards are convenient at the telescope, easy to stuff in the pocket of your shirt or coat, and easy of light on the sunrise or sunset limb of Mars.

Early in the 20th century, the English astronomer Sir Norman Lockyer demonstrated that the northeast axis aligned with the sunrise at the summer solstice, leading other scholars to speculate that the builders were sun worshipers.

Terminator: The line between night and day, where sunrise or sunset is occurring.
Terrestrial Planets: A rocky planet with a relatively thin atmosphere. Mercury, Venus, Earth, and Mars are the four terrestrial planets in our solar system.

At many locations, surface turbulence follows a diurnal cycle from a minimum just after sunrise, steeply rising to a peak during early afternoon, declining to a secondary minimum shortly after sunset, ...

Sunlight creates sunsets and sunrises that range from quiet and peaceful to colorfully spectacular. It is observed in the blue sky, in rainbows and colored rings, and in peaceful twilights.

A partial transit can be seen in progress at sunrise throughout Europe, western Asia, and eastern Africa. A partial transit can be seen in progress at sunset throughout most of North America, Central America, and western South America.

Here on earth we know it's time for breakfast when the sun comes up, but what does that mean on the International Space Station where astronauts get to see a sunrise every hour and a half? We either have to find solution to this problem.

It will emerge in the morning sky by late March, when it will shine as a bright beacon low in the east shortly before sunrise. As the year progresses, Jupiter will rise earlier and grow brighter, eventually moving into the evening sky.

It refers to the apparent standstill of sunrise and sunset points at midsummer and midwinter. (i) The most southerly and northerly declinations of the Sun. (ii) The date on which the Sun attains its greatest declination.

Mercury is not tidally locked to the Sun, its rotational period of almost 59 days is tidally coupled to its orbital period of 88 days, rotating only one and a half times during each orbit in a 3:2 resonance. Hence, a "day" on Mercury (sunrise to ...

A planet seen in the eastern sky before sunrise, especially Venus
A hazy mass of gases and particles in space ...

the joke that you could take a look at the Sun through a telescope only twice in your life - once with your left eye, and again with your right eye. The only time you could look directly at the solar disk with your naked eyes is right after sunrise ...

away from its normal great-circle path, which is the shortest distance between two points on Earth. Strong horizontal gradients are associated with the equatorward boundary of the auroral oval (especially in the night sector) and the sunrise ...

When the planet is at maximum EASTERN elongation the planet is seen in the evening close to sunset. When the planet is at maximum WESTERN elongation, the planet is seen in the morning close to sunrise (see diagram 2).

It then sets in the daytime, after the sun rises. Eventually, the moon rises so late at night that it's actually rising around sunrise, and it's setting around sunset. That's when it's a new moon once again.

See also: See also: Earth, Astro, Sun, Planet, Sky

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