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  2. Effective temperature - Wikipedia

    en.wikipedia.org/wiki/Effective_temperature

    The effective temperature of the Sun (5778 kelvins) is the temperature a black body of the same size must have to yield the same total emissive power.. The effective temperature of a star is the temperature of a black body with the same luminosity per surface area (F Bol) as the star and is defined according to the Stefan–Boltzmann law F Bol = σT eff 4.

  3. Lockheed AC-130 - Wikipedia

    en.wikipedia.org/wiki/Lockheed_AC-130

    The Lockheed AC-130 gunship is a heavily armed, long-endurance, ground-attack variant of the C-130 Hercules transport, fixed-wing aircraft.It carries a wide array of ground-attack weapons that are integrated with sophisticated sensors, navigation, and fire-control systems.

  4. Geometric albedo - Wikipedia

    en.wikipedia.org/wiki/Geometric_albedo

    Zero phase angle corresponds to looking along the direction of illumination. For Earth-bound observers, this occurs when the body in question is at opposition and on the ecliptic. The visual geometric albedo refers to the geometric albedo quantity when accounting for only electromagnetic radiation in the visible spectrum.

  5. Greenland ice sheet - Wikipedia

    en.wikipedia.org/wiki/Greenland_ice_sheet

    The south of the ice sheet is much more vulnerable than the other parts, and the quantities of ice involved mean that there is an impact on the deformation of Earth's crust and on Earth's rotation. While this effect is subtle, it already causes East Coast of the United States to experience faster sea level rise than the global average. [ 181 ]

  6. History of Earth - Wikipedia

    en.wikipedia.org/wiki/History_of_Earth

    The first eon in Earth's history, the Hadean, begins with the Earth's formation and is followed by the Archean eon at 3.8 Ga. [2]: 145 The oldest rocks found on Earth date to about 4.0 Ga, and the oldest detrital zircon crystals in rocks to about 4.4 Ga, [34] [35] [36] soon after the formation of the Earth's crust and the Earth itself.

  7. Ice cap climate - Wikipedia

    en.wikipedia.org/wiki/Ice_cap_climate

    Ice cap climate is the world's coldest climate, and includes the coldest places on Earth. With an average temperature of −55.2 °C (−67.4 °F), Vostok, Antarctica is the coldest place in the world, and has also recorded the lowest temperature, −89.2 °C (−128.6 °F). [ 3 ]

  8. West Antarctic Ice Sheet - Wikipedia

    en.wikipedia.org/wiki/West_Antarctic_Ice_Sheet

    A map of West Antarctica. The total volume of the entire Antarctic ice sheet is estimated at 26.92 million km 3 (6.46 million cu mi), [2] while the WAIS contains about 2.1 million km 3 (530,000 cu mi) in ice that is above the sea level, and ~1 million km 3 (240,000 cu mi) in ice that is below it. [20]

  9. Albatross - Wikipedia

    en.wikipedia.org/wiki/Albatross

    The name "Albatross" is derived from the Arabic al-qādūs or al-ḡaṭṭās (a pelican; literally, "the diver"), which travelled to English via the Portuguese form Alcatraz ("gannet"), which is also the origin of the name of the former prison Alcatraz.

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