Center for Particle Cosmology Spotlight
Where do comets originate?
A new technique developed by team of Penn astronomers may allow scientists to measure radiation from celestial bodies that are only theorized to exist. Indeed, the team presents an intriguing detection of radiation that may well originate from the source of comets around nearby stars.
Physicist theorizes that dark matter is a superfluid
A hypothesis by Justin Khoury of the Department of Physics and Astronomy stands to shake up how scientists consider dark matter.
Beyond Einstein?: Gravity and the Search for New Physics
Physics professors Mark Trodden and Bhuvnesh Jain discuss recent astronomical measurements that have opened a window into fundamental physics.
Origin Stories: Mark Trodden
Mark Trodden’s research lies at the border of particle physics and cosmology. Using clues contained in cosmological data, his work addresses the fundamental physics underlying such phenomena as the nature of dark matter and dark energy and the physics of the early universe. He has focused in recent years on mapping out viable models of the accelerating universe, and he has proposed one of the most-studied approaches to the idea that a modification of general relativity may explain cosmic acceleration.
Testing Gravity With Light
Grad student Amitai Bin-Nun explores light bending around black holes.
"Black holes really represent the epitome of physics," says theoretical astrophysics doctoral student Amitai Bin-Nun. "They are very simple systems that result in all sorts of rich and deep mathematical structures and an unending chain of complications."
Expanding Horizons
Physicist Mark Trodden explores the ways in which unknown forces are manipulating the universe.