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The International Astronomical Union (IAU) designates 88 constellations. [1] In the table below, they are listed by geographical visibility according to latitude as seen from Earth, as well as the best months for viewing the constellations at 21:00 (9 p.m.).
The most northern settlements on Earth are communities close to the North Pole, ranging from about 70° N to about 89° N.The North Pole itself is at 90° N. There are no permanent civilian settlements north of 79° N, the furthest north (78.55° N) being Ny-Ålesund, a permanent settlement of about 30 (in the winter) to 130 (in the summer) people on the Norwegian island of Svalbard.
Gerardus Mercator's map of the North Pole from 1595 C.G. Zorgdragers map of the North Pole from 1720 As early as the 16th century, many prominent people correctly believed that the North Pole was in a sea, which in the 19th century was called the Polynya or Open Polar Sea . [ 7 ]
A star chart of the entire Northern Sky, centered on the north celestial pole. The northern celestial hemisphere, also called the Northern Sky, is the northern half of the celestial sphere; that is, it lies north of the celestial equator. This arbitrary sphere appears to rotate westward around a polar axis due to Earth's rotation.
North of the tropic are the subtropics and the North Temperate Zone. The equivalent line of latitude south of the Equator is called the Tropic of Capricorn, and the region between the two, centered on the Equator, is the tropics. In the year 2000, more than half of the world's population lived north of the Tropic of Cancer. [4]
Greta Cross, USA TODAY February 14, 2025 at 12:40 PM The night sky may be providing the best Valentine's Day gift on Friday for Canada and some parts of the northern United States.
The yellow dashed lines are constellation boundaries, the red dashed line is the ecliptic, and the shades of blue show Milky Way areas of different brightness. The map contains all Messier objects, except for colliding ones. The underlying database contains all stars brighter than 6.5. All coordinates refer to equinox 2000.0.
The south celestial pole is visible only from the Southern Hemisphere. It lies in the dim constellation Octans, the Octant. Sigma Octantis is identified as the south pole star, more than one degree away from the pole, but with a magnitude of 5.5 it is barely visible on a clear night.