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  2. Speed of light - Wikipedia

    en.wikipedia.org/wiki/Speed_of_Light

    According to the special theory of relativity, c is the upper limit for the speed at which conventional matter or energy (and thus any signal carrying information) can travel through space. [2] [3] [4] All forms of electromagnetic radiation, including visible light, travel at the speed of light. For many practical purposes, light and other ...

  3. Orbital speed - Wikipedia

    en.wikipedia.org/wiki/Orbital_speed

    In gravitationally bound systems, the orbital speed of an astronomical body or object (e.g. planet, moon, artificial satellite, spacecraft, or star) is the speed at which it orbits around either the barycenter (the combined center of mass) or, if one body is much more massive than the other bodies of the system combined, its speed relative to the center of mass of the most massive body.

  4. Asteroid impact prediction - Wikipedia

    en.wikipedia.org/wiki/Asteroid_impact_prediction

    In late 2019 the Kiso Observatory added a new instrument to the telescope, "Tomo-e Gozen", designed to detect fast moving and rapidly changing objects. It has a wide field of view (20 square degrees ) and scans the sky in just 2 hours, far faster than any other survey as of 2021.

  5. Charlottetown meteorite - Wikipedia

    en.wikipedia.org/wiki/Charlottetown_meteorite

    Velaidum reports that he was standing at that location minutes before the meteorite struck it; he considers the event "a near-death experience". [ 4 ] The meteorite came from the asteroid belt , according to the University of Alberta researcher, and would have traveled at least 200 kilometres per hour (124 mph) just prior to impact.

  6. Meteor air burst - Wikipedia

    en.wikipedia.org/wiki/Meteor_air_burst

    Meteoroids enter the Earth's atmosphere from outer space traveling at speeds of at least 11 km/s (7 mi/s) and often much faster. Despite moving through the rarified upper reaches of Earth's atmosphere the immense speed at which a meteor travels rapidly compresses the air in its path.

  7. Meteorite crashes in South Texas causing startling boom ... - AOL

    www.aol.com/news/meteorite-crashes-south-texas...

    A meteorite crashed in the area of Mission, Texas, Wednesday night causing a loud boom that startled residents, authorities said. Meteorite crashes in South Texas causing startling boom ...

  8. How Much Is a Meteorite Worth? - AOL

    www.aol.com/much-meteorite-worth-203525072.html

    Many individuals choose to invest in valuable substances instead of stocks. Auctions for authentic meteorites draw attention. How much are meteorites really worth?

  9. Hypervelocity - Wikipedia

    en.wikipedia.org/wiki/Hypervelocity

    The term "hypervelocity" refers to velocities in the range from a few kilometers per second to some tens of kilometers per second. This is especially relevant in the field of space exploration and military use of space, where hypervelocity impacts (e.g. by space debris or an attacking projectile) can result in anything from minor component degradation to the complete destruction of a ...