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#1
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Pluto and Its Characteristics
Briefly write down characteristics of Plato. Do you think that Pluto is still ninth planet of our solar system?
Characteristics of Pluto:
Pluto is no more considered as Planet: Pluto was discovered On February 18, 1930 by American astronomer Clyde William Tombaugh (1906-1997) from the Lowell Observatory in Flagstaff, Arizona. Pluto was considered a planet for only 75 years, and questions about its planetary status had been raised for more than 10 years. Pluto is no more considered as Planet owing to the resolution passed by the International Astronomical Union (IAU) on 24 August 2006; it determines the basic criteria for planet in our solar system in the following way: A “planet” is a celestial body that: (a) is in orbit around the Sun, (b) has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape, and (c) has cleared the neighbourhood around its orbit. Pluto in this regard fails to fulfil the third criteria, as Pluto has many friends orbiting nearby, which is not the case for any of the planets. The planets accumulate, eject, or otherwise control all the mass in their immediate proximity. Pluto and Ceres are not able to do that; therefore they belong to a class i.e. dwarf planet that is really quite distinct from the eight planets. Its mass is only 0.07 times that of the mass of the other objects in its orbit (Earth's mass is comparatively 1.7 million times the remaining mass in its own orbit). |
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Kamran Chaudhary (Monday, May 14, 2012), Qazi (Tuesday, September 04, 2012) |
#2
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Pluto's mass is 1.31×1022(read as 10 raised power 22)
Its Surface area is 1.665 ×107 Sq.km(read as 10 raised power 7) is the greater one with a diameter of /3 of Pluto.(? 1/3 OR 2/3 Sir) Pluto's average temperature is about 43 Kelvin (−230 °C). (it is maximum temperature or average temperature??) ( i think average is below 40 K) |
#3
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Quote:
is the greater one with a diameter of 1/3 of Pluto. Well science is based on experimental results and nothing happens as per our thinking. The experimental results quoted in the literature show that the minimum temperature at Pluto surface is 33 K (-240 °C), maximum is 55 K while the average remains at 43 to 44 K. http://hypertextbook.com/facts/2000/PaulStengel.shtml http://en.wikipedia.org/wiki/Pluto
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Qazi (Tuesday, September 04, 2012) |
#4
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Well science is based on experimental results and nothing happens as per our thinking(thinking means according to my knowledge sir)
My knowledge is based on NASA figures about PLUTO http://pds.jpl.nasa.gov/planets/special/pluto.htm clearly mention the MEAN TEMPERATURE IS 37 K Sir with due respect Every country accepts the US skills in space knowledge kind regards |
#5
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Well when we compare figures from different sources we find different values, its a bit difficult to choose which figure is exactly correct because the data about these giant objects are being modified day by day as the research goes on. We have to rely on reference values which say temperature ranges from 33 K to 55 K means any thing between them.
__________________
Your attitude, not your aptitude, will determine your altitude...Zig Ziglar |
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Qazi (Tuesday, September 04, 2012) |
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sir
to me,for choosing data relevant&reliable source always counts for example for matters related to space NASA is reliable as wel as relevant source. kind regards |
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Ali Mallah (Monday, May 14, 2012) |
#7
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Quote:
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To succeed,look at things not as they are,but as they can be.:) |
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Ali Mallah (Monday, May 14, 2012) |
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