+ since the sun moves too, is it true that?

Question

THAT a year cannot be a year? thanks.

Answer 1

Actually there are two types of years - the tropical year and the sidereal year.

The tropical year is what we consider to be a year - measured by the passage of the seasons originally, now it can be very accurately measured as the time between two consecutive spring equinoxes, which is when the Sun crosses the celestial equator going north.

The sidereal year is the time it takes the Sun to return to the same spot in the sky relative to the background stars. This is slightly different than a tropical year because of the precession of Earth's rotational axis, and has nothing to do with the Sun's motion around the galaxy.

http://en.wikipedia.org/wiki/Tropical_year
http://en.wikipedia.org/wiki/Sidereal_year

Answer 2

EVERYTHING MOVES.

This is correct. The Milky Way is moving in relation to the local Galactic Cluster, the Local Galactic Cluster is moving in relation to the Larger Galactic Cluster. The Larger Galactic cluster is moving in relation to other Larger Galactic Clusters, which in turn is moving away from the origin of the Big Bang. The Sun is moving around the local Galactic Central Point, taking over 200 million years to circle the Galaxy. The Earth is then moving around the sun as the other planets do, too. In essence, we are moving basically 18,000 mph or so in space around the sun and the central Galactic Point. Constantly in motion! It looks motionless in space because since we're in "orbit" we are moving "relative" to the Earth so we are all travelling the same speed.

Technically, time is what you make it, and we make it the 24 hour period it takes the Earth to rotate once in a "day." Time is relative and to some people it could be 4-six hour periods in a day, or 2-twelve hour periods or 1-twenty-four hour period. We chose a 24 hour period.

So IRREGARDLESS of the speed at which we travel, we use the 24 hour day to tell time and keep an active count with the earth.

Answer 3

There are many different years, but the difference between them is a few hours at most. They are all very close to 365 days. A sidereal year is slightly longer than a tropical year for example. These different years are based on different reference points, all of which are shifting slightly with respect to each other all the time. So even though the Sun moves, a year can indeed be a year.

Answer 4

The sun is stationary in relation to other stars within the arm of our home galaxy. The galaxy arms rotate about a central point within our home galaxy, carrying our sun and other stars along with it. Earth takes 365 & 1/4 days to orbit the sun, 1/4 day equates to a leap year every four years.

Answer 5

Yes our sun moves relative to the center of our galaxy and our galaxy moves relative to the rest of the universe. Since the earth is gravitational grounded to the sun we are moving at the exact same rate as the sun, therefore our year is not affected by the movement of our solar system.

Answer 6

No. A year is how long it takes the Earth to revolve around the Sun. Although the Sun is also revolving around a black hole, it is still a year.
It's only a frame of time.

Answer 7

A year is typically defined by how long it takes a planet to revolve around the sun.

Answer 8

AdamKadm has the most correct, complete answer.

One other movement he didn't mention is the movement of our whole galaxy as resultant of the "big bang" expansion.

BTW, several years ago I was corrected for using "irregarless" as regardless is sufficient.

Answer 9

Sun moves around the pole star.

Answer 10

Your question is virtually unintelligible. Please word it better next time.

A year is a length of time. Within it's frame of reference, a year will always be a year. Within your frame of reference, a year will always be a year.