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  2. Galactic year - Wikipedia

    en.wikipedia.org/wiki/Galactic_year

    The Solar System is traveling at an average speed of 230 km/s (828,000 km/h) or 143 mi/s (514,000 mph) within its trajectory around the Galactic Center, [3] a speed at which an object could circumnavigate the Earth's equator in 2 minutes and 54 seconds; that speed corresponds to approximately 1/1300 of the speed of light.

  3. Kármán line - Wikipedia

    en.wikipedia.org/wiki/Kármán_line

    Earth's atmosphere photographed from the International Space Station.The orange and green line of airglow is at roughly the altitude of the Kármán line. [1]The Kármán line (or von Kármán line / v ɒ n ˈ k ɑːr m ɑː n /) [2] is a conventional definition of the edge of space; it is widely but not universally accepted.

  4. Cisco certifications - Wikipedia

    en.wikipedia.org/wiki/Cisco_certifications

    To earn this certification one must pass the 210-260 IINS (Implementing Cisco IOS Network Security) exam, as well as hold a current CCNA certification. The CCNA-Security is a prerequisite to the CCNP Security certification. [23] It represents the required exam to earn the certification and for continuing the security certification path to the CCNP.

  5. Circumnavigation - Wikipedia

    en.wikipedia.org/wiki/Circumnavigation

    Circumnavigation is the complete navigation around an entire island, continent, or astronomical body (e.g. a planet or moon). This article focuses on the circumnavigation of Earth . The first circumnavigation of the Earth was the Magellan Expedition , which sailed from Sanlucar de Barrameda, Spain in 1519 and returned in 1522, after crossing ...

  6. List of circumnavigations - Wikipedia

    en.wikipedia.org/wiki/List_of_circumnavigations

    Heinz Stücke has been cycling around the world since 1962. Arthur Blessitt has been walking around the world carrying a 45 lb (20 kg) wooden cross since 25 December 1969, covering 42,279 miles (68,041 km) through 324 countries. As of 13 June 2008, aged 67, he had walked in every country of the world, since when he has returned to some.

  7. Earth's orbit - Wikipedia

    en.wikipedia.org/wiki/Earth's_orbit

    The point towards which the Earth in its solar orbit is directed at any given instant is known as the "apex of the Earth's way". [4] [5] From a vantage point above the north pole of either the Sun or Earth, Earth would appear to revolve in a counterclockwise direction around the Sun. From the same vantage point, both the Earth and the Sun would ...

  8. CCNP - Wikipedia

    en.wikipedia.org/wiki/CCNP

    A Cisco Certified Network Professional (CCNP) is a person in the IT industry who has achieved the professional level of Cisco Career Certification. [1]

  9. Orbit of the Moon - Wikipedia

    en.wikipedia.org/wiki/Orbit_of_the_Moon

    Considering the Earth–Moon system as a binary planet, its centre of gravity is within Earth, about 4,671 km (2,902 miles) [25] or 73.3% of the Earth's radius from the centre of the Earth. This centre of gravity remains on the line between the centres of the Earth and Moon as the Earth completes its diurnal rotation.

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