“At first, we thought it was absurd. How else could you respond to the idea that black holes generate swirling clouds of planet-sized particles that could be the dark matter thought to hold galaxies together? We tend to think about particles as being tiny but, theoretically, there is no reason they can’t be as big as a galaxy,” said theoretical physicist Asimina Arvanitaki, at the Perimeter Institute for Theoretical Physics referring to the heated debate about the standard model for dark matter that proposes that it is ‘cold,’ meaning that the particles move slowly compared to the speed of light which is tied to the mass of dark matter particles. The lower the mass of the particle, the ‘warmer’ it is and the faster it will move.
“Planet Earth Report” connects you to headline news on the science, technology, discoveries, people and events changing our planet and the future of the human species.
“Planet Earth Report” connects you to headline news on the science, technology, discoveries, people and events changing our planet and the future of the human species. (more…)
From dark-matter life to billion-year old technological civilizations: In 2019, several leading astrophysicists from NASA to Harvard and Columbia universities have publicly announced their view that aliens are not science fiction: that advanced and ancient technological civilizations may exist but be beyond our comprehension or ability to detect. As early as the NASA Contact Conference in 2002, which focused on serious speculation about advanced extraterrestrial life, an attendee loudly interrupted the keynote speech with the observation that “We have absolutely no idea what is out there!”
This past April 2019, with an event that was as epic as the Apollo 11 landing on the Moon, the world viewed its first image of what had once been purely theoretical, a black hole at the heart of galaxy M87, frozen in time it was 55 million years ago, the size of our solar system, and bigger, with the mass of six and a half billion suns that was captured by a lens the size of planet Earth and 4,000 times more powerful than the Hubble Space Telescope. Over those eons its light took to reach us, said astrophysicist Janna Levin at Columbia University, “we emerged on Earth along with our myths, differentiated cultures, ideologies, languages and varied beliefs,” (more…)
“Planet Earth Report” connects you to headline news on the science, technology, discoveries, people and events changing our planet and the future of the human species –including “The Year UFO’s Became Legit” to “Top 10 Scientific Discoveries of the Decade” to “Antarctica’s Ghostly Invader.”