Last Week’s Top 5 Space & Science Headlines –“The Redshift Galaxy to Most Extreme Planet in the Universe”

 

ESO VLT

 

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“Hidden” –Unveiling the Universe’s Dark-Matter Signals

"Hidden" --Unveiling the Universe's Dark-Matter Signals

 

“Perhaps the most significant sign of the existence of dark matter, however, is our very existence,” observes Harvard theoretical physicist, Lisa Randall in Nature about the elusive substance that permeates the universe, exerts detectable gravitational influences, and yet eludes direct detection. “Despite its invisibility, dark matter has been critical to the evolution of our universe and to the emergence of stars, planets and even life.”

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“There’s Something We’re Missing About the Universe”

Small Dark Matter Haloes

 

“Everything we know and love about the universe and all the laws of physics as they apply, apply to four percent of the universe. That’s stunning,” says astronomer and “Cosmos” host, Neil deGrasse Tyson. Most of the mass in the universe is missing, hidden in some exotic, as yet undetectable form from the visible matter that makes up galaxies, stars, planets, and Homo sapiens.

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“Cosmic ‘Funhouse’ Mirrors Reveal Unexplored Reaches of the Universe”

Gravitational Lensing

 

Cosmic “telescopes” –dark matter lenses– which warp light like funhouse mirrors in the form of the gravitational fields of dark matter clumps, may create “efficient lenses” that can magnify light from distant reaches of the universe revealing previously unknown objects and phenomena. Although dark matter is invisible because it does not emit light, that does not mean that it doesn’t interact with light at all and can be observed by space telescope such as the NASA/ESA Hubble observatory.

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“Unexpected” –Hubble Reveals Something Missing in the Dark Universe

 

galaxy cluster MACSJ 1206

 

“One new theory says that dark matter may be ordinary matter in a parallel universe. If a galaxy is hovering above in another dimension, we would not be able to see it. It would be invisible, yet we would feel its gravity,” conjectured physicist Michio Kaku, about the mysterious, invisible phenomena that glues stars, dust, and gas together in a galaxy–its mass– and forms the foundation of our universe’s large-scale structure. Because dark matter does not emit, absorb, or reflect light, its presence is only known through its gravitational pull on visible matter in space. Astronomers and physicists are still trying to pin down what it is.

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“A New Dark Force?”

"A New Dark Force?"

 

Everything we know about the universe and all the laws of physics, apply to four percent of the universe. The other 96 percent are the unknown phenomena of dark matter and dark energy. “If we account for all the matter and energy that we’re familiar with,” says Neil deGrasse Tyson, “and measure up how much gravity it should have, it’s one-sixth of the gravity that’s actually operating on the universe. We call that dark matter. It really should be called dark gravity. and we don’t know what that is.”

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