On winter nights, looking up at the stars, sirius, the brightest star in the night sky, is very bright, above its right, the most representative orion of the winter sky。
“wish for a long time. "from time immemorial, people have always had a special feeling about the moon。
On the night of january 31st, 2018, there will be a massive monthly meal in the sky. Hang gao astronomical society friends remind you not to miss it, because it's a month's full meal and a blue moon and a super moon group, and then the sky will be the first "super blue full moon" in 150 years! Let's wait
- the fantasy star trek
Full moon
This month's meal
01-01
Let's watch this one
There may be a lot of questions about the title of the paper: is the moon that we normally see not yellow? What's with the red moon and the blue moon
We all know that when the eclipse occurs, the sun will be covered by the entire moon and the sky will be darker, but not the whole moon. When the earth lies on a straight line between the moon and the sun, it covers up the direct light of the sun. There are, however, some sun-lights that bypass the earth's edge and reflect when it passes through the earth's atmosphere, but the degree of bias varies from one light to another (the colour of the light dispersed), with the red light being the largest and closest to the book and thus on the moon. In addition, the colour of the moon is influenced by atmospheric transparency, and light in the sun, like the shorter blue wavelength, is easily dispersed or absorbed, leaving light like the longer red wavelength, making the moon look red and copper. So red moon is a big point of view for every full month。
The method of formation of the red moon
So, does the moon suddenly change its color from red to blue during the full moon? In fact, "blue moon" is not really blue, but a very rare phenomenon — two full moons in a month. The 29. 5 days between full moons (i. E., the “sweet moon” on astronomy) and the 30 or 31 days per month that we have set for each month (except in february) have resulted in a time difference, with the "blue moon" occurring on average once in 32 months。
In addition, this month's full diet will be accompanied by the phenomenon of the “super moon”. By definition, "super" is bigger than the original moon. We all know that the average distance from the moon to the earth is about 380,000 km, but the orbit around the earth is not round, but elliptical. When the moon is close to us, the moon is larger, and when it is far from us, the moon is smaller. When the “super moon” happened, it was 12 to 14 per cent larger than the distant moon and 30 per cent more。
The full moon, the blue moon and the super moon are not very rare in themselves, but the "super blue full moon" appears for the first time in the past 150 years. So, will you look up at the stars and watch this visual feast with your family
Two-two--
Please put it away
Every time a major event occurs, the hango society of astronomy organises a science campaign for citizens on the west lake break bridge. Unfortunately, however, since this month's full meal is taking place on the eve of our final exam, we can only choose to cancel this science event. However, citizens and friends can choose to enjoy the full moon with their family and friends。
While we have mentioned above that the full monthly diet is not very rare, observational conditions are not much better. For this full monthly meal, on the one hand, the monthly meal took place at around 9:30 p. M., i. E. We do not have to stay up to the night; on the other hand, in the eastern part of the country, it is difficult to observe the whole course of the whole monthly meal, from half a month to half a month, compared to the whole of previous months。
Speaking of which, citizens' friends are more concerned about where to enjoy the full moon. For citizens who live on higher floors, there is no shelter, so they can enjoy it on their own balcony, and if there is a shelter near their balcony, they can be accompanied to the more empty square nearby. Photo-loving friends can record this beautiful moment with their cameras。
03-03
A summary of the causes of the eclipse
The month begins with six months in may, five months in june, six months in may, one month in june, and five months in may, one month in january. " since time immemorial, the full monthly diet has been documented. There is also the word "dogs eat the moon". In fact, the principle of the whole moon is simple: the shadow of the earth in the direction of the sun is called the shadow of the earth, which is divided into two parts: the shadow and the shadow. This image refers to a place that is not exposed to the direct light of the sun, whereas the half of it is only partially exposed to the direct light of the sun. And when the whole moon enters the shadow of the earth, there's a full moon。
The eclipse usually occurs on full moons, when the earth moves between the sun and the moon, but not every full moon, because the moon's orbital level is approximately five degrees tilted to the earth's orbital level, and if zodiac and zodiac are painted on the planet, they will intersect at two relative points, known as the “crossing point”, where the moon can only eat at two points and just behind the earth。
The period of the monthly diet consists of a period of initial loss, food, food, light and recovery. The first of these is food, food, recycling, and the last of all. Unlike the eclipse, when it occurs, observers on earth, wherever they may be, can see the eclipse, which means that it is far less rare than the eclipse。
The stage of the eclipse
