[ad_1]
Packed with candy for sky watchers, 2018 began with a Blue Blood Moon once in its life on January 31 and a second lunar eclipse, the longest of the 21st century, is due on July 27 . The sky will not only be a canvas for the moon in a strange red but also for Mars in his largest and brightest avatar in 15 years.
Blood Moon.
The Blood Moon was seen as a sign of an imminent destiny by conspiracy theorists, a force that must be taken into account by the deep spiritual, and simply an excellent photo opportunity by many people. # 39; others. Whatever the reasons, this phenomenon has been romanticized by many, with much anticipation for the lunar event.
Why blood?
The & # 39; Blood Moon & # 39; is called as such because of the color that it takes during a total lunar eclipse, when the Earth pbades between the sun and the moon and casts a shadow on the moon.
The atmospheric conditions of the Earth during the eclipse (including dust, humidity and temperature) decide which shade of color, in the spectrum of brown copper to dark red, the moon is slipping. This is because the shorter wavelengths in sunlight (such as violets, blues and greens) are scattered across the edges of the Earth's atmosphere.
However, longer wavelengths (yellow, orange and red) are refracted or curved. around the circumference of our planet and reach the surface of the moon while under the shadow of the Earth. This effect, better known as Rayleigh Dispersion gives the moon its characteristic red-orange hue during a lunar eclipse. Rayleigh scattering is the same phenomenon that explains the blue color of the sky, and the red sunsets.
How long is it?
The total lunar eclipse on July 27 will last 6 hours and 14 minutes from beginning to end, with the complete eclipse lasting 1 hour and 43 minutes. This is just 4 minutes shorter than the longest recorded eclipse on Earth, which occurred on July 16, 2000, and lasted a little over 1 hour and 46 minutes. This was not the longest total lunar eclipse of only 48 seconds!
In contrast, the total lunar eclipse preceding January 31, 2018, lasted 1 hour and 16 minutes.
The moon of blood this month is abnormally long since the moon is at the farthest end of the Earth that it has been in this century. It also means that the shadow of the Earth projected onto the Moon during the eclipse will be longer than the one that occurs otherwise.
Where to observe?
For viewers in India, the eclipse, partial and total, will be visible its entirety from all parts of the country. The partial lunar eclipse will start around 23:54 Indian standard time, the total eclipse starting at 1 am on July 28th. The moon will look darker around 01:52 until about 2:43 in the morning, after which it will remain partially overshadowed until 3:49 of July 28
Veteran eclipse-watchers might suggest looking right at early and just before the end of the whole to catch the light blue or turquoise stripe on the face of the moon. The blue color is due to a very short period in the eclipse where the red light is scattered and the blue light is allowed through the ozone layer, which is otherwise filtered through the layers of the light. atmosphere.
The lunar eclipse does not require any special filters to protect your eyes like those used for solar eclipses. However, a good pair of binoculars could greatly enhance the experience.
[ad_2]
Source link
