The Universe in 10 Features: 5. Proto-galaxies

Another important feature in the history of Universe are the proto-galaxies. In the last 30 years we were able to observe only a few dozen of these proto or primeval galaxies, which mostly looked like shapeless blobs with an intense UV emission.

The Universe in 10 Features: 8. Population I Stars

https://www.youtube.com/watch?v=XMeIDu1C5Ls One of the fundamental laws of the universe is the conservation of Energy. Nothing is created, nothing is destroyed, and all is transformed. And so the death of the original stars brought forth new...

Pluto? Not a Planet

  Pluto is still not officially a planet. No matter what most people think, both scientist and non, until the International Astronomical Union has a vote, Pluto remains a dwarf planet. According to the IAU a...

Cecilia Payne-Gaposchkin: the woman who discovered what the Universe is made of.

In this vlog, I talk about Prof. Payne-Gaposchkin, one the most important astronomers of the 20th Century. Thanks to her we know that stars are not made by the same elements as the Earth, and that Hydrogen is the most abundant element in the Universe.

Snuffing Out Candles With Carbon Dioxide

https://youtu.be/U6aIYgCwWQ8 A cool thing to do if you have leftover dry ice is to snuff out candles using just carbon dioxide. You put dry ice in a jar and let it sublimate. The carbon dioxide will...

Smashing Galaxies

http://www.youtube.com/watch?v=qHFEmCggoLA In the first Astroholic Vlog, I present a soap box talk (minus the box) about merging galaxies.  

From the Earth to the Moon

http://www.youtube.com/watch?v=EHQ2wxq98Wg In this “out of office” vlog I try to clarify some misconceptions about the distance between the Earth and the Moon, using props and a wonderful animation by Digital Welshman.

The Universe in 10 Features – 3. Population III Stars

http://www.youtube.com/watch?v=AlHo9ssaVGU The third feature is about Population III stars. These stars are the first lights that shone in the Universe. These stars no longer exist, but affected the environment of the early Universe. They  formed...

The Universe in 10 Features – 2. Cosmic Microwave Background

The cosmic microwave background or CMB is my second feature for this series. The CMB is formed by the original photons produced in the Big Bang and was created at the last scattering surface.

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