A rare "blood moon" total lunar eclipse is now visible in parts of the United States. The celestial event began just before midnight EDT and will be visible until the early hours of Friday morning. Social media is buzzing as stargazers share beautiful images and videos of the red moon.
What makes the ‘blood moon’ red? The phenomenon known as a " blood moon " occurs during a total lunar eclipse, when the sun, Earth, and moon align in a straight line. As sunlight passes through Earth's atmosphere, it is refracted, and the longer wavelengths, such as red, are scattered. These wavelengths then reflect off the moon, giving it a reddish hue.
According to NASA , the red appearance is a result of Rayleigh scattering, a natural process that also explains why the sky appears blue during the day and why sunsets often look red. As sunlight enters Earth's atmosphere, shorter wavelengths like blue light scatter, while longer wavelengths like red light continue on to illuminate the moon. This is why the moon appears red during “blood moon” lunar eclipse.
Do we need glasses to look at the total lunar eclipse? NASA has confirmed that it is completely safe to view the total lunar eclipse with the naked eye. No special glasses or equipment are required. NASA, however, recommends that "binoculars or a telescope will enhance the view.
" The agency adds that a "dark environment away from bright lights makes for the best viewing conditions." Also Read: Blood Moon on Holi: A blessing or a ban.
