啟動詹姆斯韋伯太空望遠鏡

　　7月1日CNN聽力：NASA啟動詹姆斯韋伯太空千裏鏡 擬調換哈勃

　　It's time for the Roll Call.

　　Someone Tweeted me that I shouldn't shout thatout, but it's just not the same as saying Roll Call.

　　See, we're excited. The Bearcats are watching today.

　　They're at Bridgeport High School in Bridgeport,Michigan.

　　From Salt Lake City, the capital of Utah, we've gotThe Warriors of Northwest Middle School.

　　And in Chungcheong, South Korea, hello to everyone at Hwasung Middle School.

　　Thanks for your requests at our Web site.

　　It has been 25 years since the Hubble space telescope was put into orbit.

　　It was named for Edwin Hubble, an American astronomer.

　　And like some of the planets it's photographed, the telescope got off to a rocky start.

　　At first, its mirror was the wrong shape and it had problems with its solar arrays andgyroscopes.

　　Its first images were fuzzy.

　　Multiple spacewalks were needed to fix it.

　　Once it got going, though, the Hubble, at a cost of 2.5 billion, captured some of the mostspectacular photographs of the universe, vastly changing the field of astronomy.

　　Scientists plan to replace it with a more powerful device, the $8.7 billion James Webb spacetelescope in 2018.

　　Before We Go

　　There's frogger,Michigan J. Frog,the celebrated jumping frog of Calaveras County.

　　But arguably, the most famous frog is Kermit.

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