One of the things I really hope this blog helps accomplish is to show how science progresses (which explains why I use that tag so often, 3rd most, other popular tags: animals (most used), engineers 2nd, fun and webcasts tied for 4th).
Science is a process of continual learning as curiosity leads us to seek better understanding. On a small scale this can mean a person learning more about knowledge already understood by others. But it also means the scientific community facing new questions and coming up with new explanations for the new questions raised by observations (and testing those new explanations…). Mysterious New ‘Dark Flow’ Discovered in Space
…
They discovered that the clusters were moving nearly 2 million mph (3.2 million kph) toward a region in the sky between the constellations of Centaurus and Vela. This motion is different from the outward expansion of the universe (which is accelerated by the force called dark energy).
“We found a very significant velocity, and furthermore, this velocity does not decrease with distance, as far as we can measure,” Kashlinsky told SPACE.com. “The matter in the observable universe just cannot produce the flow we measure.”
Related: Laws of Physics May Need a Revision – Great Physics Webcast Lectures – Challenging the Science Status Quo – Parasite Rex

Pingback: Curious Cat Science and Engineering Blog » Extra-Universal Matter