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  2. Eternal flame - Wikipedia

    en.wikipedia.org/wiki/Eternal_flame

    Nizhny Novgorod Kremlin eternal flame memorializing losses during World War II .. An eternal flame is a flame, lamp or torch that burns for an indefinite time. Most eternal flames are ignited and tended intentionally, but some are natural phenomena caused by natural gas leaks, peat fires and coal seam fires, all of which can be initially ignited by lightning, piezoelectricity or human activity ...

  3. Fornax - Wikipedia

    en.wikipedia.org/wiki/Fornax

    It is located at a distance of circa 53 million light years from Earth and has apparent dimensions of 3.89' x 1.349'. [38] It is a Seyfert galaxy , the only one in Fornax Cluster . NGC 1427A is an irregular galaxy in the constellation Eridanus .

  4. Solar furnace - Wikipedia

    en.wikipedia.org/wiki/Solar_furnace

    The device, the Mont-Louis Solar Furnace is still in place at Mont-Louis. The Pyrenees were chosen as the site because the area experiences clear skies up to 300 days a year. [2] The Odeillo Solar Furnace is a larger and more powerful solar furnace. It was built between 1962 and 1968, and started operating in 1969.

  5. Open-hearth furnace - Wikipedia

    en.wikipedia.org/wiki/Open-hearth_furnace

    The last open-hearth shop in China was shut down in 2001. The process in the form of Twin Hearth Furnace was in use in India's Steel Authority of India Bhilai Steel Plant and some parts of Ukraine. Russia retired its last hearth furnace in March 2018, and was considering preserving it as a museum artifact.

  6. The time when a day on Earth was just 19 hours long - AOL

    www.aol.com/lifestyle/day-earth-used-just-19...

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  7. Extremes on Earth - Wikipedia

    en.wikipedia.org/wiki/Extremes_on_Earth

    The longest continuous east–west distance on land is 10,726 km ... is farther away from Earth's centre than the summit of Mount Everest is; the latter is 2,168 m ...