As of 2008,most known extrasolar planets have been discovered by
A)the astrometric technique.
B)the Doppler technique.
C)the transit technique.
D)the Hubble Space Telescope.

Question

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The Answer of As of 2008,most known extrasolar planets have been discovered by
A)the astrometric technique.
B)the Doppler technique.
C)the transit technique.
D)the Hubble Space Telescope.

As of 2008,most Known Extrasolar Planets Have Been Discovered by