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  2. Thermosphere - Wikipedia

    en.wikipedia.org/wiki/Thermosphere

    The thermosphere contains an appreciable concentration of elemental sodium located in a 10-kilometre (6.2 mi) thick band that occurs at the edge of the mesosphere, 80 to 100 kilometres (50 to 62 mi) above Earth's surface. The sodium has an average concentration of 400,000 atoms per cubic centimeter.

  3. Atmosphere of Earth - Wikipedia

    en.wikipedia.org/wiki/Atmosphere_of_Earth

    The troposphere is the lowest layer of Earth's atmosphere. It extends from Earth's surface to an average height of about 12 km (7.5 mi; 39,000 ft), although this altitude varies from about 9 km (5.6 mi; 30,000 ft) at the geographic poles to 17 km (11 mi; 56,000 ft) at the Equator, [17] with some variation due

  4. Kármán line - Wikipedia

    en.wikipedia.org/wiki/Kármán_line

    Haley also cited other technical considerations for that altitude, as it was approximately the altitude limit for an airbreathing jet engine based on current technology. In the same 1959 paper, Haley also referred to 295,000 feet (55.9 mi; 90 km) as the "von Kármán Line", which was the lowest altitude at which free-radical atomic oxygen occurred.

  5. Your Puppy Vaccine Schedule, According to Veterinarians - AOL

    www.aol.com/puppy-vaccine-schedule-according...

    Dr. Contreras suggests looking at pet insurance options with preventative wellness plans that cover vaccines or asking your vet for a technician-only visit for booster shots to reduce cost.

  6. Adopted a New Dog? A Vet Shares the Best Puppy Vaccine ... - AOL

    www.aol.com/adopted-dog-vet-shares-best...

    According to the standards used worldwide, dogs who are presented without a history of any vaccine should receive the core vaccines (distemper, parvo, and adenovirus) immediately and a booster of ...

  7. TIMED - Wikipedia

    en.wikipedia.org/wiki/TIMED

    The Mesosphere, Lower Thermosphere and Ionosphere (MLTI) region of the atmosphere to be studied by TIMED is located between 60 and 180 kilometres (37 and 112 mi) above the Earth's surface, where energy from solar radiation is first deposited into the atmosphere. This can have profound effects on Earth's upper atmospheric regions, particularly ...

  8. Ionosphere - Wikipedia

    en.wikipedia.org/wiki/Ionosphere

    The ionosphere (/ aɪ ˈ ɒ n ə ˌ s f ɪər /) [1] [2] is the ionized part of the upper atmosphere of Earth, from about 48 km (30 mi) to 965 km (600 mi) above sea level, [3] a region that includes the thermosphere and parts of the mesosphere and exosphere. The ionosphere is ionized by solar radiation.

  9. Chilean scientists develop reversible dog neutering vaccine - AOL

    www.aol.com/news/chilean-scientists-develop...

    The vaccine can be used for both males and females and costs about 50,000 Chilean Pesos ($54). It requires a veterinarian's prescription and evaluation to ensure the dog is a suitable candidate.