[Hank Green] posted an interesting video about the first liquid mirror telescope from back in the 1850s. At the time, scientists were not impressed. But, these days, people are revisiting the idea.

[Hank Green] posted an interesting video about the first liquid mirror telescope from back in the 1850s. At the time, scientists were not impressed. But, these days, people are revisiting the idea.

One answer to the problem is the liquid mirror telescope, which uses a rotating dish of liquid metal that forms its own parabolic surface—no mirror grinding required. Elegant, no? We've already ...

Japan's government has been considering joining a U.S.-led space telescope initiative to search for Earth-like planets and ...

"I'm like a child let loose in a toy store." The fun should continue until the telescope runs out of the liquid helium that helps cool it, in about 2008. Early in the next decade, NASA plans to ...