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    Asteroid tagged posts

    Engine Test Marks Major Milestone on NASA’s journey to Mars

    March 12, 2016, Categories  Astronomy/Space

    NASA engineers conduct a successfully test firing of RS-25 rocket engine No. 2059 on the A-1 Test Stand at Stennis. The hot fire marks the first test of an RS-25 flight engine for NASA’s new Space Launch System vehicle. Credit: NASA/SSC

    NASA engineers conduct a successfully test firing of RS-25 rocket engine No. 2059 on the A-1 Test Stand at Stennis. The hot fire marks the first test of an RS-25 flight engine for NASA’s new Space Launch System vehicle. Credit: NASA/SSC

     
    NASA successfully tested the first deep space RS-25 rocket engine for 500s Mar 10, clearing a major milestone toward the next great era of space exploration. The next time rocket engine No. 2059 fires for that length of time, it will be carrying humans on their first deep-space mission in more than 45 years.

    The hot fire marked the first test of an RS-25 flight engine for NASA’s new Space Launch System (SLS), being built to carry humans on future deep-space missions, including an asteroid and Mars. 4 RS-25 engines will power the SLS core stage.

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    Geminids set to Light up Winter Sky in Year’s Best Meteor Shower

    December 10, 2015, Categories  Astronomy/Space

    A diagram showing how the meteors will appear to emanate from a radiant in the constellation of Gemini, located in the east in the evening sky. Credit: Greg Smye-Rumsby / Astronomy Now

    A diagram showing how the meteors will appear to emanate from a radiant in the constellation of Gemini, located in the east in the evening sky. Credit: Greg Smye-Rumsby / Astronomy Now

    From 13 to 15 Dec, weather permitting, skywatchers across the world will be looking up as the Geminid meteor shower reaches its peak, in potentially one of the best night sky events of the year. Tens of ‘shooting stars’ or meteors may be visible each hour (the theoretical maximum under ideal conditions is about 120/hr). Meteors are the result of small (mm- to cm-sized) particles entering the Earth’s atmosphere at high speed, burning up and superheating the air around them, which then shines as a characteristic short-lived streak of light...

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    Asteroids found to be the Moon’s main ‘Water Supply’

    September 30, 2015, Categories  Astronomy/Space

    This is the temperature of the surface around the southern pole of the moon according to LRO data. Credit: NASA

    This is the temperature of the surface around the southern pole of the moon according to LRO data. Credit: NASA

    Water reserves found on the moon are the result of asteroids acting as ‘delivery vehicles’ and not of falling comets as was previously thought. Using computer simulation, scientists have discovered that a large asteroid can deliver more water to the lunar surface than the cumulative fall of comets over a billion year period.

    At the beginning of the space age, during the days of the Apollo program, scientists believed the moon to be completely dry. At these earliest stages in satellite evolution, the absence of an atmosphere and the influence of solar radiation were thought enough to evaporate all volatile substances into space...

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