Monday, October 3, 2011

Bending The Rules – Exploring Gravitational Redshift

Bending The Rules – Exploring Gravitational Redshift:


Researchers have analyzed measurements of the light from galaxies in approximately 8,000 galaxy clusters. Galaxy clusters are accumulations of thousands of galaxies (every light in the image is a galaxy), which are held together by their own gravity. This gravity affects the light that is sent out into space from the galaxies. Credit: Hubble Space Telescope


Hey. We’re all aware of Einstein’s theories and how gravity affects light. We know it was proved during a total solar eclipse, but what we’ve never realized in observational astronomy is that light just might get bent by other gravitational influences. If it can happen from something as small as a star, then what might occur if you had a huge group of stars? Like a galaxy… Or a group of galaxies! (...)
Read the rest of Bending The Rules – Exploring Gravitational Redshift (572 words)




NATURE PICTURES & THE UNIVERSE

No comments:

Post a Comment