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Aeroplane bound sky photography of moon-planet conjunction can be thrilling experience
Many sky-gazers and night sky photography enthusiasts take photographs of conjunctions of two planets or a planet with the Moon. In astronomy, a conjunction is an event in which any two astronomical objects have the same celestial longitude as observed from the Earth.

In the case of a geocentric conjunction of two of our solar system's celestial objects appear to an earthbound observer as being near one another in the sky around the time of the conjunction. The conjunction between two planets comes after many years of wait since they move slowly and it is a much publicized event.

Many plane-bound travellers in the evening or early morning tend to take pictures of conjunctions since the sky appears to be clear. Such a picture was sent recently in May by a Facebook friend travelling to Malaysia.

The Moon moves much faster and it passes conjunction with every planet roughly once a month. In case of the moon-planet conjunction, the two celestial objects usually appear to be separated by no more than a few degrees.

According to astronomers, the planets orbit the Sun in almost the same plane with a common line across the sky while the Moon has a different orbital plane that deviate by up to 15° from the ecliptic. Thus, the Moon can be in apparent conjunction with the one or the planet every month.

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