And how does NASA mean to deal with a dramatic appearance of Planet X in the skies, for all to see, the Second sun phenomena that on occasion presents itself to observers at sunrise or sunset.
2
他准确地预测了金星将在1761年和1769年穿过太阳表面——尽管他没能活到看到这一现象的那一天。
He accurately predicted that Venus would cross the face of the Sun in both 1761 and 1769—though he didn't survive to see either.
3
1677年11月，哈雷在南太平洋荒凉的圣赫勒拿岛上观测到了水星（最靠近太阳的行星）的凌日现象。
In November 1677, Halley observed a transit of the innermost planet, Mercury, from the desolate island of St Helena in the South Pacific.
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