Galaxies

An object hundreds or thousands of times the mass of the sun would represent an elusive class of black hole

Researchers may have found a precursor to today's galaxies, dating back to when the universe was in its infancy

A survey from on high confirms the far-flung source of a celestial infrared background

Yale astrophysicist Kevin Schawinski talks about Galaxy Zoo, a distributed computing project in which laypeople can help researchers characterize galaxies. And we tour Kroon Hall, the new green home of the Yale School of Forestry and Environmental Sciences. Plus, we'll test your knowledge of some recent science in the news. Web sites related to this episode include www.galaxyzoo.org; www.environment.yale.edu/kroon

Cosmologist Tamara Davis, an associate of the Dark Cosmology Center in Denmark, pulls together an answer

A new proposal contends that stars formed alongside our sun might be recognizable, even after billions of years of separation

One-hundred-fifty-thousand amateur astronomers are taking part in the Galaxy Zoo project (GalaxyZoo.org), helping professionals sort through a million telescope images to characterize galaxies. Cynthia Graber reports

Gas clouds pulled into orbit around black holes could survive long enough to make stars

A look at some of our extreme planetary neighbors right here in the Milky Way Galaxy