Helium is a chemical element that is the second most abundant in the universe. It is a noble gas, known for its low reactivity and lightness. Helium is widely used for inflating balloons and airships, as well as in various medical and...

This video provides a comprehensive overview of helium, covering its properties, discovery, and various applications. It explains how helium's unique characteristics make it ideal for cryogenic purposes, such as preserving food and...

Helium is so great...and we are running out of it, but also we are not running out of it.

Hydrogen bomb how does it work? The bomb on Hiroshima released the energy equivalent of 15,000 tons of TNT. The first hydrogen bomb released the energy equivalent of 10,000,000 tons of TNT.



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Today we are talking about the life -- and death -- of stars. Low mass stars live a long time, fusing all their hydrogen into helium over a trillion years. More massive stars like the Sun live shorter lives. They fuse hydrogen into...

This video is about the original cold fusion: μ muon-catalyzed cold fusion of deuterium, tritium, hydrogen, into helium-3 and helium 4. The problems with it are the half-life of muons and the sticking of muons to alpha...

We don't live in a perfect world, and neither do gases - it would be great if their particles always fulfilled the assumptions of the ideal gas law, and we could use PV=nRT to get the right answer every time. Unfortunately, the ideal gas...

In which John Green, Hank Green, and Emily Graslie teach you about what happened in the Universe after the big bang. They'll teach you about cosmic background radiation, how a bunch of hydrogen and helium turned into stars, formed...

The first stars turned all the neutral hydrogen in the universe back into ions, created a bunch of new elements, and just generally made a mess. But without them, you wouldn’t be here.

The mass of the sun was well understood, and translates to about 10^57 atoms. This leads to a lifetime of the sun of about 20,000 years. But we know the sun is at least 4.5 billion years old. So where does the...

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To make most complex structures in the universe like trees, and us, you need more than atoms. You need molecules. How do you go from atoms formed in the core of stars, to molecules that can lead to living...

The Hindenburg tragedy was one of the great aviation disasters of the 20th century. Chemical reactions are thought to have brought down the airship, but which ones? Chemistry - Reactions - Learning Points. The Hindenburg was a German...

It's time to check out Group 18 on the periodic table, the noble gases. This includes helium, neon, argon, krypton, xenon, radon, and oganesson. What can we say about their properties, reactivities, and applications? Let's find out!

Stars represent a celestial battle of two opposing forces, gravity trying to collapse the star, and radiation pressure trying to explode the star. But it comes to an end close to the time that it runs out of fuel. Gravity...

Countries like China, the US, and Russia are setting their sights on the Moon. But is it purely for the advancement of mankind, or is there profit to be found? Mining for Helium-3, metals and rare-earths on the Moon might be closer than...

This video is about the lifecycle of a star but did you know that each star starts from a cloud of dust and hydrogen gas?

China is creating an artificial star that burns at temperatures eight times hotter than our sun by replicating its energy-generating, hydrogen fusion process on Earth.

Scientists get Hydrogen to bond with a special variation of Helium, as the Professor explains. We've simplified things quite a bit... Full (and very technical) paper in Science (Jan 28, 2011). More chemistry