View Full Version : Bad Astronomy at Space.com!

2005-Mar-23, 05:33 AM
From Nearby Evidence for Dark Energy (http://space.com/scienceastronomy/050322_dark_energy.html):

In the 1920’s, astronomer Edwin Hubble showed that the universe was expanding and that galaxies were moving away from each other with speeds proportional to their distance. He measured distances of other galaxies from the Earth by their brightness as an indication. If the light of a galaxy became fainter over time, it meant that it was moving further away.
Somehow, I don't think Hubble was actually measuring a change in the brightness of galaxies over the course of a few years, or even decades!

Added: And it got duplicated at CNN.com (http://www.cnn.com/2005/TECH/space/03/22/dark.energy/index.html), too.

2005-Mar-23, 06:18 PM
But not everyone’s convinced that the answer lies in the dark. I'm convinced. :wink:

Hello, JohnOwens! :D