What is a transit of Venus? What is the transit of Venus

Venus and the Earth orbit the Sun, and when the three are in a straight line, Venus blocks the Sun's rays, and we see the transit of Venus.

The transit of Venus means: Venus's orbit is on the inner side of the Earth's orbit, and at some specific moments, the position of the Earth, Venus, and the Sun will be in a straight line, and it can be seen from the Earth at this time, and Venus is like a small black dot moving slowly on the surface of the Sun.

Many astronomy enthusiasts will be excited and cheer if they have the opportunity to see the transit of Venus, but there are still many people who do not know what the transit of Venus means. Let's find out.

01 The "Transit of Venus" on June 6, 2012 was the last that could be seen until 2117, and the transit lasted for 6 hours, and most of China was in the best observation area.

02 A transit of Venus is a celestial phenomenon that occurs when Venus orbits between the Sun and the Earth, and when the three are exactly in a straight line, Venus blocks part of the sun's surface. Therefore, the transit of Venus is also known as a small solar eclipse. The principle is different from that of a solar eclipse.

The transit of Venus can be divided into five phases: Circumvention, Circumcision, Circumcision, Circumcision, Circumcision.

03 The transit of Venus is usually calculated in hours (2004 and 2012, lasting about 6 hours). In principle, it is similar to a solar eclipse, although Venus is almost 4 times the diameter of the Moon. Venus is much smaller when viewed from Earth because it is farther away from Earth.

Before modern astronomy, people used parallax to measure the distance between the Sun and the Earth by observing the transit of Venus.

04 Venus is the inner planet of the Earth, and it takes days to revolve around the Sun, and it takes days for the Earth to revolve around the Sun. The period of their conjunction is days. That is, the time interval between two consecutive conjunctions of Venus.

And the transit of Venus is only twice a century. (The last transit of Venus in nearly a century occurred in 2004.) Unless you're lucky, the transit of Venus is really a "once in a lifetime" event.

05 There are two types of transits of Venus: one is the transit of Venus at the descending node, which occurs around June 8. At that time, Venus passes through the sun (ecliptic) from north to south; One is the transit of Venus at the ascending node, which occurs around December 10, when Venus passes through the sun (ecliptic) from south to north.

It is generally believed that the transit of Venus at the descending and ascending nodes alternates in pairs and is equal in number. Actually, the two are not equal in number, i.e. there are more transit times of Venus at the descending node than at the ascending node.

Venus orbits on the inner side of the Earth's orbit, and at some special moments, the Earth, Venus, and the Sun will be in a straight line, and Venus can be seen from the Earth moving slowly on the surface of the Sun like a small black dot, which is called "Venus Transit" in astronomy.

A transit is the movement of a planet between the earth and the sun, and the opposition is a planet on the far side of the sun, and the common point between the two is that the earth, the planet, and the sun are in the same straight line.

The transit of Venus means that Venus is between the Earth and the Sun, and the transit is only for Mercury and Venus, because only these two planets are in the Earth's orbit and can reach the transit position, and the opposition is the presence of all seven planets.

The transit of Venus is a natural phenomenon, because Venus is on the inner side of the Earth's orbit, it will pass between the Earth and the Sun, and because the orbit of Venus has a certain angle with the horizontal plane, Venus will pass above or below the plane of the Earth and the Sun most of the time; But at a special moment, Venus will pass directly in front of the Earth and the plane between the Earth and the Sun, at this time, people on the Earth will see Venus pass in front of the Sun (there is a small black dot on the Sun), people call this phenomenon "Transit", which is Venus passing in front of the Sun, so it is called "Venus Transit". And because the only planets in the inner orbit of the Earth are Mercury and Venus, there are only "Mercury transits" and "Venus transits", and the planets on the outer side of the Earth's orbit do not pass between the Earth and the Sun, so they do not cause transits. In fact, the nature of a transit is similar to that of a solar and lunar eclipse, except that when the moon passes between the earth and the sun, we call it a lunar eclipse, not a "lunar transit".

Venus crashes into the Sun. Venus: One of the eight planets......

Venus orbits on the inner side of the Earth's orbit, and at some special moments, the Earth, Venus, and the Sun will be in a straight line, and Venus can be seen from the Earth moving slowly on the surface of the Sun like a small black dot, which is called "Venus Transit" in astronomy. The most anticipated celestial phenomenon of 2012, the "Transit of Venus", will be staged on June 6, and most of China is in the best observation area.

The transit of Venus is similar in principle to a solar eclipse, although Venus is almost four times the diameter of the Moon. Venus is much smaller when viewed from Earth because it is farther away from Earth.

Transit of Venus: Venus orbits on the inner side of the Earth's orbit, and at some special moments, the Earth, Venus, and the Sun will be in a straight line, and Venus can be seen from the Earth moving slowly on the surface of the Sun like a small black dot, which is called "Venus Transit" in astronomy. The most anticipated celestial phenomenon of 2012, the transit of Venus, will be staged on June 6.

Astronomical experts say that this is the last time that can be seen until 2117, with a transit time of up to 6 hours, and most of our country is in the best observation area.

It indicates that we can observe the image of Venus flying past the sun, nothing special, Venus is still there every day.

Venus, also known as Taibai, is the main killer and heralds war.

When three or more planets converge or go in a straight line, there will be natural disasters of varying degrees in a certain country and region on the ground, which are caused by strong gravitational pull, such as tsunamis, floods, etc.

It's all, I'm still nine stars.

Nothing foreshadows, the end of the world in 2012 is pure. There are two transits of Venus every 100 years, so there are so many dooms.

It means that we can see this wonder!

It's time for you to wash and sleep.

It indicates that the person who regards this as a big deal is a killer!

In astronomy, the transit of Venus is a rare phenomenon, occurring on average once every 60 years. There will be a cycle in the past and in the next few hundred years, about 4 times in 243 years. The time interval between transits is approximately

Once a year, then once every 8 years, then once a year, then again every 8 years, and finally every year, and so on. In the near future, the specific time of the transit of Venus is:

December 7, 1631 December 4, 1639.

June 5, 1761 June 3, 1769.

December 9, 1874 December 6, 1882.

June 8, 2004 June 6, 2012.

Previously, there was a lot of interest in the transit of Venus, because scientists thought that this phenomenon could be used to find a way to measure the distance between the Earth and the Sun. Because this hypothesis and this phenomenon are rare, the transit of Venus has caused several large-scale observational events.

In 1761 and 1769, many coastal states sent astronomers who traveled around the world to record the exact time when Venus entered and left the sun's surface. In 1874 and 1882, the United States, Great Britain, Germany, and France sent large-scale expeditionary missions to observe the transit of Venus. In 1874, the U.S. Observation Group reached China, Japan, and Eastern Siberia in the north, and Australia and New Zealand in the south.

In 1882, the U.S. Observing Mission did not have to go on an expedition because the transit of Venus could be observed in the United States. In the Southern Hemisphere, the transit of Venus occurs in places like the Cape of Good Hope.

Later, more reliable methods of ranging appeared, so the astronomical value of the transit of Venus was greatly reduced. However, it is undeniable that these large-scale observation activities are of great significance in determining the future movement of Venus.

The phases of Venus at various points in its orbit.

When Venus is between the Earth and the Sun, each appearance lasts for more than 100 years, and it appears in pairs for a long time.