Year: 2022

THE IMPOSSIBLE FADES. “The fact that in several respects our universe appears very similar to a coasting or empty universe is a motivation to reconsider the impossibility arguments against the existence of negative mass, on the one hand, and antigravity, on the other.” https://lnkd.in/daA2SgMy View in LinkedIn

RECONSIDERATION. “This led us to the study of the properties of the Dirac-Milne universe, a symmetric matter-antimatter universe, where antimatter is endowed with negative mass, an analog of the electron-hole system in a semi-conductor, providing a cosmology impressively concordant with our universe.” https://lnkd.in/daA2SgMy View in LinkedIn

ANTIGRAVITY TEST. “Importantly, a key test of the Dirac-Milne cosmology will soon be realized in the laboratory with cold antihydrogen atoms: the AEgIS, ALPHA-g and Gbar experiments at CERN are expected to provide tests of the antigravity hypothesis.” (2018). https://lnkd.in/daA2SgMy View in LinkedIn

PRELIMINARY INSIGHTS. “While Gbar is preparing a precision measurement with antihydrogen ions cooled to a few tens of microkelvin, the ALPHA collaboration, which made the first spectroscopic measurements on antihydrogen, achieved in 2013 the first constraints on antimatter gravity, though still a factor ≈ 65 larger than the sensitivity necessary to test antigravity.” https://lnkd.in/daA2SgMy View in LinkedIn

EXPECTATIONS. “Whatever the experimental results, they will have important repercussions on our understanding of the evolution of our universe.” (The end of this exciting paper). https://lnkd.in/daA2SgMy View in LinkedIn

ANTIMATTER. “High precision particle astrophysics as a new window on the universe with an Antimatter Large Acceptance Detector In Orbit (ALADInO).” https://lnkd.in/du8rYCYD View in LinkedIn

NO NEGATIVITY. “When I first knew [him], I used to think that he watched himself, and would not allow his tongue to give expression to fretfulness, antipathy, complaint, and remonstrance. It did not occur to me as possible that these mental states could be absent in him. After long observation, however, I satisfied myself that such absence or unconsciousness was entirely real.” (Dr Bucke on the poet Walt Whitman). https://lnkd.in/d5aiMCmu View in LinkedIn

In our culture at least, puppets evoke a very deep emotional trigger that goes to the heart of childhood and the disconcerting symbolism of these early toys. View in LinkedIn

Hubble image of a giant red nebula and smaller blue neighbor nebula. https://lnkd.in/dYDmzQVT View in LinkedIn

NEW TECHNOLOGY. “During the last 20 years, the advent space-borne magnetic spectrometers in space (AMS-01, Pamela, AMS-02), able to measure the charged cosmic radiation separating matter from antimatter, and to provide accurate measurement of the rarest components of Cosmic Rays (CRs) to the highest possible energies, have become possible, together with the ultra-precise measurement of ordinary CRs.” https://link.springer.com/content/pdf/10.1007/s10686-021-09708-w.pdf View in LinkedIn