What does the astronomical conjunction mean?

It is the Earth-Jupiter-Saturn projection of the three planets on a line, and Jupiter and Saturn are seen closest to each other on Earth. There is a civil conjunction about once every 20 years. The probability of seeing Jupiter and Saturn overlapping on Earth is not very small, but simply impossible.

The orbits of the three planets are not coplanar, and if you take the intersection line where the three sides intersect in pairs, you will find that there is no situation where there is no three points and one line.

From the Earth's point of view, Saturn and Jupiter orbit to become a pair of "double stars", that is, they coincide together, of course, from the Earth's point of view, in fact, there is a distance.

That's it, two stars recombine into one, kind of like a solar eclipse.

When it looks closest from the earth, it is called "together"; It's not that they overlap, it's estimated that they don't overlap once in tens of thousands of years, and they are all too small from the earth, and the overlap is almost minimal.

Saturn and Jupiter conjunct, overlapping each other.

It is on Earth that Jupiter and Saturn appear to overlap, and their positions are similar to those of the eclipse.

The conjunction of civil and engineering is not astronomical, it seems to be used for fortune telling. Check it out:

Jupiter and Saturn "stars attract" is actually just a visual effect from the Earth, in fact, the two planets are very far apart, and the two planets will appear in their respective orbits at a certain time. <>

At around 2:30 a.m. on December 22, 2020, there will be a very rare conjunction of Jupiter and Saturn in the sky, when Jupiter and Saturn are very close together from Earth, and the angular distance between them is only about one-fifth of the diameter of the moon we usually see. <>

Kou Wen of the Beijing Planetarium said that on December 21, after the sun sets, Jupiter and Saturn can also be seen in the southwest sky, the brighter one is Jupiter, and the slightly fainter one is Saturn, and there is about more than one hour of observation time before they set. <>

Astronomers say that the phenomenon of the conjunction of Jupiter and Saturn presented here is only a visual effect from the Earth**. In fact, the two planets are so far apart that they are just special celestial phenomena that appear in orbit.

In the universe, whether it is the earth, Jupiter, Saturn or other planets, they are basically near a plane, and when they orbit along their respective orbits, there is always a specific time and a time, and the angles they form are very close, which is the astronomical spectacle of "stars attracting" that we see.

Astronomers point out that such a scene usually occurs once in 20 years, but such a close astronomical scene is very rare, and it can be said that it is not seen in a hundred years.

Since the conjunction on March 5, 1226, Jupiter and Saturn have come closest in nearly 800 years, and this year is known as the "Great Conjunction", when the angular distance between the two stars is about one, which can be called a "seamless" connection.

If you want to see Saturn and Jupiter so close again, it is estimated that you will have to wait until March 15, 2080, 60 years later.

On this day, astronomy enthusiasts can observe the surface details of Jupiter and the stripes of Saturn's rings at the same time if they use a high-powered telescope, which can be said to be a must-see visual feast for astronomy enthusiasts.

They are actually far away, but they run at different speeds, so they seem to have the phenomenon of sympathy.

This phenomenon is due to the fact that both Saturn and Jupiter are in a kind of motion around the earth, and then you can see this phenomenon when you look at it from a special angle, and this is only a very obvious visual effect.

The reason why this phenomenon occurs is because of the influence of the earth's magnetic field, so that such a wonderful landscape can appear.

When Jupiter and Saturn have the same right ascension or ecliptic longitude as the Earth, it is also called "Jupiter conjunction Saturn". When such planetary conjunctions occur in celestial bodies, it is often the moment when two celestial bodies appear closest in the night sky.

I'm going to take the test too. The National Astronomical Observatories of the Chinese Academy of Sciences... When you talk about astrophysics, it's actually astrophysics.

It is the largest branch of astronomy, and it is not very difficult to take astronomy in general, and the professional courses are not very difficult, because there are not many special professional things, they are some college physics or something, and I applied for interstellar exploration and planetary chemistry, and the professional courses are physics and geochemistry, and there is no high mathematics, and the public courses are only politics and English. So it's pretty simple... I don't know what you are more specific about, anyway, astrophysics contains a lot of majors, you can go to the school** to see and understand, I can't say the specific score, but physics is definitely a necessary course in astronomy.

Hope it helps.

The civil engineering major is practical, the employment is relatively easy, and the income is good. Astronomy is not a practical subject, and employment seems to be not easy. Mathematics and high-energy physics are key and difficult points, and my understanding is limited, so you need further consultation.

You have a complete brain problem, can you eat if you like astronomy?

Which unit you are going to work in after you go to graduate school?

Honestly study the things on the earth, don't be practical, do some astronomy. Pure nonsense.

It's up to you!! Because the main source of this course is interest!!

Second, doing anything with the person you love the most is very meaningful and memorable. Doing anything with someone you love is especially valuable and meaningful. A rare spectacle like this, with the person you love the most**, is also a very romantic thing to look back on years later.

The happiness and love of two people is spliced together by this profound thing, and when you think back on this experience in your later years, you will feel very meaningful and wonderful, and you will feel that being with him is really the happiest thing in the world.

3. Two people who love each other look up at this astronomical spectacle and enjoy the silence of the night. Look up at this astronomical wonder at night with your loved one and enjoy the silence of the night. As long as two people sit on a chair and look up at the sky, they will feel very happy, and feel that the whole world belongs to the two of us.

I will be with my lover**, because such astronomical spectacles are rare, and I will find it romantic with my lover**.

I want to spend the Mid-Autumn Festival with my family, barbecue on the top floor while having the stars and the moon in the sky.

Of course, together with our astronomy teacher**, you can also listen to him talk about the knowledge of the heavens.

I'll be with my roommates ** the half-moon phenomenon of the civil binary. Because now in school, I can only watch it with my roommates, after all, it is a spectacle phenomenon, and I will watch it.

**The scope is so small, and the brand of Mead is also specified, which does not need to be recommended, and it is directly **press**search for it. However, it seems that Mead's reflex type is rare, and it is probably not produced in China at present.