December 13, 2005
- The mass of the star Sirius B is determined by measuring the gravitational redshift of light emitted from its surface. The researchers obtained this observationally challenging data using the Hubble Space Telescope. (SpaceRef.com)
- Scientists at the Salk Institute embed human nerve cells in the brain of mice. Even though they arrived at only 0.1 percent of the brain being made of human cells, this work spurs discussion of ethical limits of biological research. (AP/YahooNews)
- An international collaboration of astronomers re-analyse archived Hubble Space Telescope pictures to map the distribution of dark matter in the Universe. The results seem to support the theory that both visible and dark matter are clumped into "web like" structures. (space.com/YahooNews)
Read more about this topic: December 2005 In Science
Famous quotes containing the word december:
“Work—work—work,
In the dull December light,
And work—work—work,
When the weather is warm and bright—
While underneath the eaves
The brooding swallows cling
As if to show me their sunny backs
And twit me with the spring.”
—Thomas Hood (1799–1845)