Fabulous projects for the study of dark matter and dark energy

[giann_tee]

The most relevant observation to date regarding dark matter is "Bullet cluster".

"The Bullet cluster (1E 0657-56) consists of two colliding clusters of galaxies.[1] Studies of the Bullet cluster, announced in August 2006, provide the best evidence to date for the existence of dark matter.[2] At a statistical significance of 8σ, it was found that the spatial offset of the center of the total mass from the center of the baryonic mass peaks cannot be explained with an alteration of the gravitational force law.[3] Observations of other galaxies cluster collisions, such as MACS J0025.4-1222, also show significant displacement between their center of visible matter and their gravitational potential."
http://en.wikipedia.org/wiki/Bullet_Cluster


Major contribution to the study of dark energy was published recently.

"A team led by Alexey Vihklinin (Smithsonian Astrophysical Observatory) has discovered that very ancient galaxy clusters are much more massive than those that formed more recently. "What we find is that the growth of these structures has slowed down during the past 5½ billion years," Vihklinin explains, "and this is the unmistakable signature of dark energy.""
http://www.skyandtelescope.com/community/skyblog/newsblog/36372969.html

 

[AndyW]

Thank you for sharing this information about the Bullet cluster and the recent discovery about dark energy. These are both important observations in the study of dark matter and dark energy, which are still largely unknown and mysterious forces in our universe.

The Bullet cluster is a particularly relevant observation because it provides strong evidence for the existence of dark matter. The fact that the center of mass for the total mass of the cluster is offset from the center of visible matter is a clear indication that there is something else at play, something that we cannot see or detect directly.

The recent discovery about dark energy is also significant because it helps us understand how these massive structures, such as galaxy clusters, have evolved over time. The fact that their growth has slowed down in the past 5½ billion years is a strong indication that dark energy is affecting the expansion of the universe.

Overall, these observations are crucial in helping us understand the nature of dark matter and dark energy, and they provide important clues for future research and discoveries in this field. I am excited to see how these observations will contribute to our understanding of the universe and its mysterious components.