Almost all retinal detachments can be repaired with scleral buckle surgery, pneumatic retinopexy, or vitrectomy. But even with such a high rate of success for surgery, it is important to act quickly. The longer you wait to have surgery, the lower the chances that good vision will be restored.
The Earth's axis runs through the North and South poles and it is the line around which the Earth rotates. The geographic North Pole is located approximately 450 miles (725 km) north of Greenland, in the middle of the Arctic Ocean - the sea there has a depth of 13,410 feet (4087 meters).
Polaris wasnât always the North Star. Around the year 2500 BC, the celestial pole was near Thuban, located in the constellation Draco. Around the year 400 BC, the pole was closer to Kochab, Beta Ursae Minoris, than it was to Alpha UMi.