Galaxy-Quasar Associations: Is the Big Bang Bung?

submitted by: RayTomes
When we see a galaxy and a quasar near each other in the sky, it might be because they are really near each other, or it might be that they are far apart and just along the same line of sight. Tests performed by Alan Stockton (Astrophysical Journal 223:747-757, "The Nature of QSO Redshifts", 1978) on a sample of such pairs have shown that some galaxy-quasar pairs have the same redshift and so are accepted as being at the same distance. Other pairs with very different redshifts however have...

Hubblecast 01: Hubble sees 'Comet Galaxy' being ripped apart by galaxy cluster

submitted by: spacetelescope

The NASA/ESA Hubble Space Telescope, in collaboration with several other ground- and space-based telescopes, has captured a galaxy being ripped apart by a galaxy cluster's gravitational field and harsh environment. The finding sheds light on the mysterious process by which gas-rich spiral-shaped galaxies might evolve into gas-poor irregular- or elliptical-shaped galaxies over billions of years.

Voyager: Inspiring Generations

submitted by: nasa

For 30 years, Voyager has been broadening our view of the solar system and inspiring new generations to explore.
For more information see: http://www.jpl.nasa.gov/videos/voyager/voyager20070820/

Amazing Earth 2

submitted by: scivee-team

A documentary about volcanic eruptions, their causes and effects on Earth and the geological implications of those events in history and in the future - Part 2.