NASA’s Kepler mission discovered the first Earth-size planets orbiting a sun-like star outside our solar system. These planets are called ___ and____.
A. Kepler-20e; Kepler-20f
B. Kepler-20a; Kepler-20b
C. Kepler-20c; Kepler-20d
D. Kepler-20m; Kepler-20n
Answer:A
NASA’s Kepler mission discovered the first Earth-size planets orbiting a sun-like star outside our solar system. These planets are called ___ and____.
A. Kepler-20e; Kepler-20f B. Kepler-20a; Kepler-20b C. Kepler-20c; Kepler-20d D. Kepler-20m; Kepler-20n