gravity

Researchers used the Dark Energy Spectroscopic Instrument to map how nearly 6 million galaxies cluster across 11 billion years of cosmic history. Their observations line up with what Einstein’s theory of general relativity predicts.

Fermilab’s Don Lincoln explores if additional dimensions of space exist beyond our 3-dimensional world. Maybe the exploring the existence of ghosts can offer up some clues?

Which theory on gravity is the most accurate at describing reality? Don Lincoln suggests perhaps we have reached a moment of scientific Zen and that gravity just is.

From Big Think: Is it true, what goes up must come down? Don Lincoln explores the ALPHA collaboration’s use of CERN’s Antimatter Factory to test if antimatter might experience gravity in a manner opposite of ordinary matter. The conclusion: antimatter does not fall upward.

For over a century, scientists have wondered what is counteracting the force of gravity in the universe.

From Big Think, October 25, 2022: Don Lincoln explores the two theories of gravity from Newton and Einstein. Due to astronomers observations of gravitational waves recorded in 2017, we now know that gravity and light travel at the same speed.

From Science News, August 4, 2022: A proposed experiment called Windchime, will try something new: It will search for dark matter using the only force it is guaranteed to feel — gravity. Fermilab physicist Dan Hooper chimes in on what this experiment can mean to the study of dark matter.

From Forbes, April 29, 2021: Don Lincoln discusses a possible model of dark matter called a WIMP, short for weakly interacting massive particle.

From Super Interessante, Jan. 31, 2021: A team of researchers from Fermilab and the National Observatory in Brazil used the light of solitary stars to calculate the mass of some of the largest structures in the cosmos — galaxy clusters. In addition to taking the most detailed measurement ever published of intracluster light, the team’s new method of measurement can help further investigate dark matter.

From University of Birmingham, Jan. 13, 2021: Fermilab will take part in an international collaboration, led by Cardiff University, on quantum-enhanced interferometry for new physics. The project’s four table-top experiments may help explore new parameter spaces of photon-dark matter interaction, and seek answers to the long-standing question at the heart of modern science: How can gravity be united with the other fundamental forces?