The laugh track, otherwise known as the cringiest sound in modern television. Where did it come from and why do so many of our favorite sitcoms still use it?

This video explains the formation of the universe as described by the Big Bang theory.

Cosmologist Paul Steinhardt (Princeton) describes the so-called "initial conditions problem" that makes cosmic inflation very hard to start.

Nobel Laureate Roger Penrose, University of Oxford, describes a profound puzzle that he's been wrestling with throughout his entire research career: how is it possible that the universe began in a peculiar state of both minimum and...

Nobel Laureate Roger Penrose, University of Oxford, summarizes the core aspects of his theory of Conformal Cyclic Cosmology (CCC).

Princeton University physicist Paul Steinhardt describes how we might get beyond the intellectual dead-end that the theory of cosmic inflation seems to have led us to.

Nobel Laureate in Physics Roger Penrose (Oxford) relates his longstanding bemusement at why the early universe was in such a peculiar low state of entropy.

Cosmologist Justin Khoury, University of Pennsylvania, describes the enormous disparity between the observation and theoretical prediction of the vaccuum energy, commonly regarded as the worst failure of theoretical physics, and...

A Boltzmann brain is not real, but what’s fascinating about it is that it thinks it’s real, and all the memories and experiences it has are real. But, of course, this brain is not real. But how would such a brain know that its memories...

In which Hank explains how and why phycisists think that the univers has no edge.

La ecuación E=mc² indica que, así como la materia encierra energía, la energía se podría convertir en materia ¿O no? ¿Qué significa realmente esa ecuación de Einstein?

La ecuación E=mc² de Einstein sugiere que la masa y la...

The origin of the universe

This video explores five fun facts about The Universe.

Physics majors study the universe, from electrons and protons to supergiant stars.



As a physics major you will take A LOT of math and apply complex formulas to the problems at hand. Physics majors don't just learn the...

What happens when black holes collide? What is the speed of gravity? There are so many weird questions related to gravitational waves.

Cosmic inflation is a theory that was proposed in the 1980s by cosmologist Alan Guth to answer some of the most fundamental questions of the origins of our universe. It also solved the Horizon Problem and the Flatness Problem.

Multiverse theory suggests that our universe, which consists of billions and billions of planets, stars and galaxies and extends out tens of billions of light-years, may not be the only universe that exists. There could be another...

Okay, so we are about 150 million years into the lifetime of the universe. We've got a bunch of hydrogen and helium and not much else. But then gravity takes over, and boom! We've got stars! How, you ask? Well you'd better watch this!

Lesson 10 (Conservation of Energy) of Dianna's Intro Physics Class on Physics Girl. Never taken physics before? Want to learn the basics of physics? Need an AP Physics 1 review before the exam? This course is for you! Exercises in this...

Thursday, July 30, 2:00 pm - 3:00 pm ET: NSF-funded Physics Frontiers Centers (PFCs) are pushing the frontiers of science across the disciplines of physics. The Joint Institute for Nuclear Astrophysics Center for Evolution...

Former NIST physicist Kent Irwin discusses the NIST transistion edge sensor, a special integrated circuit made from superconducting materials, and how it is being used to study everything from the Big Bang to the safety of nuclear plants.

Astronomers say they caught a glimpse of the biggest explosion in the cosmos ever observed by X-ray and radio telescopes. <br/>

There are some mysteries that not even the greatest scientists of all time have been able to explain!

The video discusses two theories that try to explain the expansion and evolution of the universe - the steady state theory and the Big Bang theory. The video covers the concept of redshift of light exhibited by galaxies moving away from...