earth's orbit around the sun
2016 is a leap year. February 29, 2016 will be another day to add to the calendar to help synchronize the rotation of the Earth around the sun and the true passage of seasons.
The phenomenon of the upper ring of fire is also known as the solar solar eclipse, which is Latin for 'circle', visible from various areas in Asia, the Pacific region and some in
Vietnamese astronomers have the opportunity to see a part of the solar eclipse - an astronomical phenomenon many people pay attention to take place in the morning of May 21.