article_snippet.sent: you are going to need a very big mirror and a golf ball of gold.
article_snippet.sent: It's going to be a tough act to follow.
article_snippet.sent: But there are limits to how far it can see.
article_snippet.sent: There isn't a rocket currently capable of carrying that so as NASA spokesperson Lynn Chandler explained: "It has to be folded up like a flower and then unfurled like a transformer.
article_snippet.sent: The Webb telescope requires a huge mirror of 25 square meters (about 270 square feet) -- and a golf ball of gold (about 48 grams or 1.7 ounces) to optimize The Webb telescope for infra-red light.
article_snippet.sent: The Webb telescope is then coated with glass.
article_snippet.sent: But technology like this doesn't come cheap.