Earth and Mars Acquire Saturn-Like Rings Over Hundreds of Millions of YearsIn the current snapshot of the Solar system, Mars has an inner moon named Phobos, whose orbital radius shrinks by 2 meters per century as a…1d ago41d ago4
Neutrinos Cannot Travel Faster Than Light, or Else Black Holes Would Not be StableIn September 2011, the OPERA experiment at CERN reported that neutrinos travel faster than light. Nearly two hundred papers tried to make…3d ago93d ago9
Could Academia Catch Up with AI?Humans have a hard time adapting to a fast exponential growth over a timescale of years, especially in academia which is used to…5d ago65d ago6
The Virtues and Risks of Slow Aging by Gravitational Time DilationOn April 2, 2024, the Office of Science and technology Policy (OSTP) at the White House issued a memo in which it acknowledged the…6d ago66d ago6
The Inefficiency of LifeDuring an inspiring WORLD.MINDS dinner, I asked my Harvard colleague and friend, the psychologist Daniel Gilbert, who was sitting next to…Nov 126Nov 126
Commissioning Data on Half a Million Objects in the Sky from the Galileo Project Observatory: Are…After 3.5 years of planning, hardware assembly, data collection and analysis, the Galileo Project (GP) under my leadership released the…Nov 125Nov 125
Everything Everywhere All at Once About the UniverseBelow is the transcript of a wide-ranging interview I had before sunrise this morning.Nov 115Nov 115
Avi Loeb’s Statement on UAPs to the House Oversight and Accountability CommitteeOver the past few months, I was asked multiple times by Staff of the House Committee on Oversight and Accountability whether I am available…Nov 1016Nov 1016
The Nature of Dark EnergyThe brilliant 87-year-old astrophysicist Jerry Ostriker, called me on zoom today to ask: “What is dark energy?” He had been troubled by…Nov 96Nov 96
The Mass of LightIn empty space, a particle of light — the photon, is massless. Hence, a free photon propagates at the limiting speed of light.Nov 87Nov 87
