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2 dni temu · Alpha Centauri (α Centauri, α Cen, or Alpha Cen) is a triple star system in the southern constellation of Centaurus.It consists of three stars: Rigil Kentaurus (α Centauri A), Toliman (α Centauri B), and Proxima Centauri (α Centauri C).Proxima Centauri is the closest star to the Sun at 4.2465 light-years (1.3020 pc).. α Centauri A and B are Sun-like stars (class G and K, respectively ...
2 dni temu · The Andromeda Galaxy is a barred spiral galaxy and is the nearest major galaxy to the Milky Way.It was originally named the Andromeda Nebula and is cataloged as Messier 31, M31, and NGC 224.Andromeda has a D 25 isophotal diameter of about 46.56 kiloparsecs (152,000 light-years) and is approximately 765 kpc (2.5 million light-years) from Earth. The galaxy's name stems from the area of Earth's ...
2 dni temu · They traversed the 515 km (320 mi) distance in 3 hours 10 minutes, reaching a top speed of 210 km/h (130 mph) and sustaining an average speed of 162.8 km/h (101.2 mph) with stops at Nagoya and Kyoto. ... (120 miles per hour). A velocity of 210 kilometres per hour (130 miles per hour) is permitted on the 42 kilometres ... The UK's fastest high ...
2 dni temu · The Cretaceous–Paleogene (K–Pg) extinction event, also known as the Cretaceous–Tertiary (K–T) extinction, was the mass extinction of three-quarters of the plant and animal species on Earth approximately 66 million years ago. The event caused the extinction of all non-avian dinosaurs.Most other tetrapods weighing more than 25 kilograms (55 pounds) also became extinct, with the exception ...
2 dni temu · The airport covers 5,200 acres or 21 square kilometers (8.1 sq mi). [6] [174] Over 25 miles (40 km) of paved taxiways allow aircraft to move around the airfield. [ citation needed ] The standard width of these taxiways is 75 feet (23 m), with 25 feet (7.6 m) heavy-duty shoulders and 25-foot (7.6 m) erosion control pavement on each side.
2 dni temu · The F4U-1 was considerably faster than the Grumman ... 12.F pilots trained for this experimental program were required to manually pilot the missile at approximatively two kilometers from the target on low altitude with a ... of bombs. The AU-1 had a maximum speed of 238 miles per hour (383 km/h) at 9,500 ft (2,900 m), when loaded with 4,600 lb ...
2 dni temu · Africa. Africa is the world's second-largest and second-most populous continent after Asia. At about 30.3 million km 2 (11.7 million square miles) including adjacent islands, it covers 20% of Earth 's land area and 6% of its total surface area. [7] With 1.4 billion people [1] [2] as of 2021, it accounts for about 18% of the world's human ...
