NASA's James Webb Space Telescope - Today's Webb Fact: Webb is the scientific complement to the Hubble Space Telescope, but the two telescopes are physically different. Webb has a mass of about
![Size comparison of the Hubble Space Telescope and the James Webb Space Telescope (to be launched in 2018) : r/space Size comparison of the Hubble Space Telescope and the James Webb Space Telescope (to be launched in 2018) : r/space](http://i.imgur.com/V5p56FA.jpg)
Size comparison of the Hubble Space Telescope and the James Webb Space Telescope (to be launched in 2018) : r/space
![Hubble on X: "How big is Hubble? Nearly the size of a school bus! #funfact #Hubble25 http://t.co/zMVmCIf9ye http://t.co/JPM3IsyiKu" / X Hubble on X: "How big is Hubble? Nearly the size of a school bus! #funfact #Hubble25 http://t.co/zMVmCIf9ye http://t.co/JPM3IsyiKu" / X](https://pbs.twimg.com/media/B7Vce6dCMAAaStO.jpg)