June 2004 saw the first passage, known as a ‘transit’, of the planet Venus across the face of the Sun in 122 years. Transits have helped shape our view of the whole Universe, as Healther Cooper and ...

对应原文：F段：The parallax principle can be extended to measure the distances to the stars. 答案解析：F段的前半部分在说利用视角差测量法确定地球到太阳的距离。后半段又提到这种方法也可以用来测量地球到其他恒星的距离。即视角差原理的不同应用的例子。由此确定答案。