Which future u. s. mission will provide high-resolution images of nearby exosolar planetary systems? kepler corot planetquest terrestrial planet finder

The correct answer is terrestrial planet finder.  

The TPF or terrestrial planet finder was a suggested project by NASA to develop a system of space telescopes for finding the extrasolar terrestrial planets. There were actually, two telescope systems under contemplation, that is, the TPF-1, the infrared astronomical interferometer that had many small telescopes, and TPF-C, Visible Light Coronagraph that used one large telescope.  

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atomic mass

239 + 1 = y + 134 + 3 combine like terms

240 = y + 137             subtract 137 from both terms

240 - 137 = y

103 = y

atomic number

94 = z +54 + 0

94 = z + 54               subtract 54 from both sides.

40 = z

answer