President Obama has not dwelt on race – his own or the history of racism in America. And for all the talk about 'teachable moments,' he has not encouraged a deep national discussion of the issue.
A mockup of the James Webb Space Telescope, billed as the successor to the Hubble Space Telescope, took center stage at New York's World Science Festival.
A life-size model of a huge new space observatory described as the successor to the Hubble Space Telescope is on display at the World Science Festival at New York City's Battery Park.
The Hubble Telescope was launched on April 24, 1990. NASA says the best is yet to come.