回归年（Year of regression）.doc

回归年（Year of regression） Definition of science and technology terms in the year of regression English Name: tropical year other name: solar year definition: solar flat, yellow longitude changes 360 degrees of time interval. Subject: Astronomy (first class discipline); astrometry (two discipline), this content is examined and approved by national science and technology term examination and Approval Committee medical aircraft Year (Tropical): the time from the earth to see the ecliptic of the sun circling the celestial sphere, that is, the time of the solar center from the vernal equinox to the vernal equinox, also known as the solar year. 1 return = 365 about 365 days 5 hours 48 minutes and 45.5 seconds. In a year of regression, the earths revolution around the sun is not 360 degrees, but 359 degrees, 59 , 9, and 740 cents per second. Difference principle conclusion Edit this paragraph The year of regression is not the same as the Sidereal year. The sidereal year refers to the time required by the earth to orbit 360 degrees a week. 1 stars = 365.2564 days = 365 days, 6 hours, 9 minutes, 10 seconds. It is applied to astronomy rather than calendar. As for why the stars will return a little longer than years, that is due to the moon, the sun and the planets gravitational influence, moving the axis of rotation around the ecliptic ellipsoidal earth makes the equator more prominent as slow (corresponding to 20.24 per year since the equinox speed West back almost 71 years, moving to the West 1 degrees, about 25800 years a week), namely mobile precession phenomenon. There are flowers in spring and summer rain, autumn breeze and winter snow. Seasons change, which means year. So, say now is July January perihelion aphelion, is temporary. Edit this paragraph principle In January each year during the northern hemisphere winter, at this time, the earth is too recently, and in July the northern hemisphere summer season the earth is too aphelion. Is it cold near the sun an