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  2. Fermi Gamma-ray Space Telescope - Wikipedia

    en.wikipedia.org/wiki/Fermi_Gamma-ray_Space...

    The LAT [9] is an imaging gamma-ray detector (a pair-conversion instrument) which detects photons with energy from about 20 million to about 300 billion electronvolts (20 MeV to 300 GeV), [10] with a field of view of about 20% of the sky; it may be thought of as a sequel to the EGRET instrument on the Compton Gamma Ray Observatory.

  3. 2024 Green Party presidential primaries - Wikipedia

    en.wikipedia.org/wiki/2024_Green_Party...

    The Green Party has run candidates for president in every election since 1996.Consumer advocate Ralph Nader was the party's nominee in 1996 and 2000.Political activist David Cobb was nominated in 2004; former U.S. congresswoman Cynthia McKinney was the nominee in 2008; physician and activist Jill Stein was nominated in 2012 and 2016; and activist Howie Hawkins was the Green nominee in 2020.

  4. 2024 CrowdStrike incident - Wikipedia

    en.wikipedia.org/wiki/2024_CrowdStrike_incident

    Computers running macOS and Linux were unaffected, as the problematic content file was only for Windows, [20] but similar problems had affected Linux distributions of CrowdStrike software in April 2024 [broken anchor]. [21] [22] CrowdStrike reverted the content update at 05:27 UTC, [23] and devices that booted after the revert were not affected ...

  5. Radiation - Wikipedia

    en.wikipedia.org/wiki/Radiation

    There is a zone of the atmosphere in which ozone absorbs some 98% of non-ionizing but dangerous UV-C and UV-B. This ozone layer starts at about 20 miles (32 km) and extends upward. Some of the ultraviolet spectrum that does reach the ground is non-ionizing, but is still biologically hazardous due to the ability of single photons of this energy ...

  6. Speed of light - Wikipedia

    en.wikipedia.org/wiki/Speed_of_Light

    [20] [21] The special theory of relativity explores the consequences of this invariance of c with the assumption that the laws of physics are the same in all inertial frames of reference. [ 22 ] [ 23 ] One consequence is that c is the speed at which all massless particles and waves, including light, must travel in vacuum. [ 24 ] [

  7. 2024 Iranian strikes against Israel - Wikipedia

    en.wikipedia.org/wiki/2024_Iranian_strikes...

    On 13 April 2024, the Islamic Revolutionary Guards Corps (IRGC), a branch of the Iranian Armed Forces, in collaboration with the Islamic Resistance in Iraq, [3] Lebanese militant group Hezbollah, and the Ansar Allah (Houthis), launched retaliatory attacks against Israel and the Israeli-occupied Golan Heights [note 2] with loitering munitions, cruise missiles, and ballistic missiles. [14]

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