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  2. Diffraction spike - Wikipedia

    en.wikipedia.org/wiki/Diffraction_spike

    Although diffraction spikes can obscure parts of a photograph and are undesired in professional contexts, some amateur astronomers like the visual effect they give to bright stars – the "Star of Bethlehem" appearance – and even modify their refractors to exhibit the same effect, [5] or to assist with focusing when using a CCD.

  3. Upper-atmospheric lightning - Wikipedia

    en.wikipedia.org/wiki/Upper-atmospheric_lightning

    Representation of upper-atmospheric lightning and electrical-discharge phenomena Discovery image of a TLE on Jupiter by the NASA Juno probe. [1]Upper-atmospheric lightning and ionospheric lightning are terms sometimes used by researchers to refer to a family of short-lived electrical-breakdown phenomena that occur well above the altitudes of normal lightning and storm clouds.

  4. Piton - Wikipedia

    en.wikipedia.org/wiki/Piton

    1960s-era pitons, including: knifeblades, lost arrows, bugaboos, ring angles, and bongs. A piton (/ ˈ p iː t ɒ n /; also called pin or peg) in big wall climbing and in aid climbing is a metal spike (usually steel) that is driven into a crack or seam in the climbing surface using a climbing hammer, and which acts as an anchor for protecting the climber from falling or to assist progress in ...

  5. Charred by fire, these grand California redwoods rise again ...

    www.aol.com/news/charred-fire-grand-california...

    Today, that forest is still dominated by the same trees, some of them more than 300 feet tall and 1,000 years old. But on Aug. 16, 2020, lightning strikes touched off the CZU Complex fire, ...

  6. Arboreal locomotion - Wikipedia

    en.wikipedia.org/wiki/Arboreal_locomotion

    Animals other than primates that use gripping in climbing include the chameleon, which has mitten-like grasping feet, and many birds that grip branches in perching or moving about. To control descent, especially down large diameter branches, some arboreal animals such as squirrels have evolved highly mobile ankle joints that permit rotating the ...

  7. Moon tree - Wikipedia

    en.wikipedia.org/wiki/Moon_tree

    Moon trees are trees grown from seeds taken into orbit around the Moon, initially by Apollo 14 in 1971, and later by Artemis 1 in 2022. [1] The idea was first proposed by Edward P. Cliff , then the Chief of the United States Forest Service , who convinced Stuart Roosa , the Command Module Pilot on the Apollo 14 mission, to bring a small ...

  8. Blue giant - Wikipedia

    en.wikipedia.org/wiki/Blue_giant

    Because O-type and B-type stars with a giant luminosity classification are often somewhat more luminous than their normal main-sequence counterparts of the same temperatures and because many of these stars are relatively nearby to Earth on the galactic scale of the Milky Way Galaxy, many of the bright stars in the night sky are examples of blue ...

  9. ‘Bad way to be treated’: California couple got dropped by ...

    www.aol.com/finance/bad-way-treated-california...

    An aerial photograph from space, supposedly showing the roof, was used as justification. Liberty Mutual claimed the roof had moss, mildew and algae growth, but the Colemans insist the alleged ...

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