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How many times does the earth cross the galactic equinox in 1 cycle of the galaxy?
Wiki User
∙ 13y ago
The galactic alignment occurs once every 26,000 years but Earth crosses the Milky Way's galactic plane (also called the galactic equator) twice a year, every year.
Wiki User
∙ 13y ago
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What types of equinox are there?
There are two kinds; the vernal equinox when the Sun passes over the equator heading toward you, or the autumnal equinox when the Sun passes over the equator going away from you. If you live in the northern hemisphere - North America, Asia, Europe - the vernal (or spring ) equinox is around March 21. If you are in the southern hemisphere - most of Africa and south America, and all of Australia - the vernal equinox is around September 21. Each of these dates can shift one or two days either way depending on the cycle of leap years. In 2010, the March equinox (vernal for us in the north, autumnal for you Aussies) is on March 21 at 17:32 GMT. The September equinox (my autumnal here in California, but vernal for my friends down in Kiwi Land :-) ) is on September 23 at 03:09 GMT.
Where in the cross bridge cycle does ATP hydrolysis occur?
during the cocking of the myosin head
Does the vernal equinox mark the beginning of spring in the northern hemispher?
Yes. The beginning of spring in EITHER hemisphere marks the beginning of spring. Typically, the northern hemisphere vernal equinox is on March 21, while the southern hemisphere vernal equinox is on September 21, but those dates can vary a day either way depending on the cycle of leap years. In 2012, the equinoxes are on March 20 at 0513 Universal (Greenwich) time, and September 22 at 1429 UT.
Day and night are equal at?
Equal periods of sun-up and sun-down are all near March 21 and September 21, everywhere on earth, including the equator. Those days are often called the "equinoxes", but the equinoxes are actually the points in the sky where the sun appears to be located on those days.
What exact times do the 4 seasons start and end?
Fall winter spring summer
What is the moment when the sun appears to be across the celestial equator called?
The sun appears to cross the celestial equator twice in the course of one year. The point in the sky where the sun appears to cross the celestial equator on its way south is called the Autumnal Equinox. The moment when it appears to be in that position is called the "Beginning of Fall" in the northern hemisphere. The point in the sky where the sun appears to cross the celestial equator on its way north is called the Vernal Equinox. The moment when it appears to be in that position is called the "Beginning of Spring" in the northern hemisphere.This happens at the equinox, which is around March 21 and September 21. (The date varies a day or so either way, depending on the cycle of leap years.)If you need to know exactly when this is, you can look that up on the US Naval Observatory's web site on the "Earth's Seasons" page (linked below).
Is a quasar the same as a galaxy?
No, it's a possible stage in the life cycle of a star.
When was the date of vernal equinox in 1978?
the vernal equinox is always on the 21 of march. that's the day I'm righting this. _______________________________ The equinoxes occur on March 21 and September 21, plus or minus one day because of the cycle of leap years. In the northern hemisphere, the vernal equinox is in March, and the autumnal equinox is in September; in the southern hemisphere, it's reversed. In 1978, the vernal equinox in the northern hemisphere was March 20, 1978 at 5: 10 PM GMT.
How long does it take to the end of the galaxy?
Galaxies don't really end or disappear. Stars can take a few billion years to die, but it's all part of a cycle that feeds new stars. The black hole in the center could suck up all the stars if something were to throw them out of orbit. A collision of two galaxies is unlikely, but it happens, and if it did, many stars would be flung into space. But 1 galaxy would be formed as a galactic sandwich.
What are the dates of the twice yearly equinox?
It varies, mostly on how far along we are in the 4-year cycle of leap years and the 400-year cycle of leap centuries and on what part of the world you're asking about (although it's Friday morning where I live, it's Saturday in some parts of the world). Lately, in the U.S., the vernal equinox has been falling around March 20, and the autumnal equinox around September 22, although this year it's on the 23rd.
What is Equinox Precession?
a process that takes approximately 23,000 years to complete ---- Many geologists think Earth's climatic cycle is due to equinox precession, a process that takes approximately 23,000 years to complete. During equinox precession, Earth wobbles on its axis, causing the degree to which the Earth is tilted on its axis to vary. This variance produces changes in the amount of solar radiation reaching different parts of Earth's surface, thus influencing the global climate. During some parts of this cycle, Earth is cooler and has ice ages. During other parts of this cycle, Earth experiences global warming.
What energizes the power stroke in cross bridge cycle?
Hydrolysis of ATP
Where in the cross bridge cycle does hydrolysis occurs?
during the cocking of the myosin head
What role does tropomyosin play in cross bridge cycle?
The displacement of tropomyosin exposes the active sites of actin allowing cross bridge to form.
Where in the cross bridge cycle does ATP hydrolysis occur?
during the cocking of the myosin head
What type of two cycle engine requires a contoured piston?
cross scavenged engines
What types of equinox are there?
There are two kinds; the vernal equinox when the Sun passes over the equator heading toward you, or the autumnal equinox when the Sun passes over the equator going away from you. If you live in the northern hemisphere - North America, Asia, Europe - the vernal (or spring ) equinox is around March 21. If you are in the southern hemisphere - most of Africa and south America, and all of Australia - the vernal equinox is around September 21. Each of these dates can shift one or two days either way depending on the cycle of leap years. In 2010, the March equinox (vernal for us in the north, autumnal for you Aussies) is on March 21 at 17:32 GMT. The September equinox (my autumnal here in California, but vernal for my friends down in Kiwi Land :-) ) is on September 23 at 03:09 GMT.
