In just these two days, many netizens have been brushed by an upcoming astronomical wonder, that is, the rare "five-star beads", what is a five-star bead? Literally: the five planets in the solar system will be connected in a straight line in space, and they are connected as if they were strings of beads with a thread.
According to media reports, there is no Earth among the five-star planets, these 5 planets are Venus, Jupiter, Mercury, Mars and Saturn, the time of the pearl is on the evening of August 19, 2021, when there will be 5 planets in the night sky at once, and they will appear in a straight line.
Fake! The naked eye looks connected in a line, but it does not actually happen
In fact, the 5 planets are not connected in a straight line in space, according to the 3D model of the operation of the eight planets of the solar system, Venus, Jupiter, Mercury, Mars and Saturn are not lined up on the ecliptic surface, so strictly speaking, the 5-star series does not actually happen, which is false.
The real five-star beads, I'm afraid we still have to wait for decades to appear once, Venus, Jupiter, Mercury, Mars and Saturn five-star bead interval time, according to the celestial rotation speed and radius can be calculated. It has been calculated that on December 10, 2149, there will be nine stars in succession, and it will only appear once in 6000 years.
So what about the five-star series of pearls reported by the media? In fact, it is nothing more than a five-star series of pearls that appear to the naked eye, that is, on the evening of August 19, Venus, Jupiter, Mercury, Mars and Saturn appear in a piece of the sky at the same time, and as seen with the naked eye, it is almost in the same straight line.
Anyway, the fact that 5 planets can line up in a straight line in the night sky dome is also a spectacle that can be seen every few years, and if the weather is clear, you may wish to take a look, if there is a telescope or astronomical telescope, the viewing effect will be better.
Watch the guide
Viewing time: Shortly after the sun sets, at dusk, the sky is not completely dark, about 7 o'clock, and then late can not be seen, because from the perspective of the earth to watch, recently, The dome of Venus, Mercury and Mars follow behind the sun, not very far from the sun, so look at the five stars to see the pearls as soon as possible.
Viewing Directions: Venus, Mercury, and Mars are west of the sun's setting, because we live in the northern hemisphere, and Jupiter and Saturn are outside the Orbit of the Earth, so Jupiter and Saturn will appear in the southeastern position on the dome. However, over time, they will also move southwest. Interesting and informative scientific content, please pay attention to the only WeChat public account: Interesting Exploration