Source : INDIA TODAY NEWS
The night sky is preparing to host a rare celestial treat, and skygazers across India are holding their breath. A Blue Moon is rising, sparking curiosity and a flood of questions about whether our celestial neighbour will actually change its hue.
Before you hunt for blue filters or expect a smurf-coloured orb, it helps to understand the cosmic geometry behind this beautifully named event.
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WHAT IS A BLUE MOON?
Despite its vivid name, the Moon will not actually turn blue. The term does not describe a colour shift, but rather a rare quirk of the calendar.
A seasonal Blue Moon is the third Full Moon in an astronomical season that contains four Full Moons instead of the usual three.
A typical season, defined by the solstices and equinoxes, spans three months and usually sees three Full Moons.
However, because the lunar cycle takes about 29.5 days to complete, a bit of extra time accumulates over the months.
This cosmic math occasionally squeezes a fourth Full Moon into a single season. The event happens roughly once every two and a half years, proving that the old phrase once in a blue moon is rooted in solid orbital mechanics.
WILL THE MOON TURN BLUE TOMORROW?
On Sunday, May 31, the lunar surface will display its classic, brilliant pearly white and grey tones.
For the Moon to actually look blue, specific atmospheric conditions are required, completely unrelated to orbital phases.
Huge volcanic eruptions or intense forest fires can pump thick plumes of smoke and ash into the upper atmosphere.
If these airborne particles are exactly the right size, slightly wider than the wavelength of red light, they scatter red light away while letting blue light pass through.
This rare atmospheric filter can make the lunar disc look distinctly blue or greenish-blue, a phenomenon witnessed after the historic eruption of Krakatoa. Tomorrow, however, you will see a regular, dazzlingly bright Full Moon.
HOW TO WATCH THE BLUE MOON IN INDIA?
Catching this sky spectacle is incredibly simple because you do not need any expensive telescopes or high-tech binoculars to enjoy it.
The brilliant lunar disc will be perfectly visible to the naked eye from anywhere in India, provided the monsoon clouds clear up.
To get the best view, find an open space away from tall buildings and bright streetlights.
The ideal time to look up is during the twilight hours as the Moon rises above the eastern horizon.
Due to an optical illusion caused by the atmosphere, the rising Moon will appear much larger and showcase a warm, golden orange tint before climbing higher into the dark night sky.
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SOURCE :- TIMES OF INDIA
