Exoplanet located 63 light years away has wind velocity 20 times faster than earth: Scientists

Q.  Exoplanet located __ light years away has reached a value of 8690 km per hour around 20 times faster than that recorded on earth.
- Published on 16 Nov 15

a. 62
b. 63
c. 64
d. 65

ANSWER: 63
 
An exoplanet located 63 light years away has winds which have reached a velocity of 8690 km per hour which is 20 times faster than that recorded on Earth, as per the first ever weather map of this planet. Weather system on the planet outside Earth’s solar system has been measured and mapped. Wind speed recorded is 7 times the speed of sound. On exoplanet HD 189733b, researchers measured the velocities on the two sides and found a strong wind moving at over 8,690kmph blowing from its dayside to its night side. The wind velocity was measured through high resolution spectroscopy of the Sodium absorption featured in its atmosphere.

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