International Astronomy Day 2017 & Hubble at 27!

It's #International Astronomy Day and Hubble has turned 27 this month! Let's celebrate with some of its most breathtaking pictures!

Snuffing Out Candles With Carbon Dioxide 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...

The Universe in 10 Features – 3. Population III Stars 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...

Smashing Galaxies In the first Astroholic Vlog, I present a soap box talk (minus the box) about merging galaxies.  

Astroholic Vlog: Dyson Spheres

In this Astroholic Vlog I will be talking about Dyson Spheres. Dyson Spheres are hypothetical megastructures purposely built around stars to absorb most or all of the stellar electromagnetic output. The idea comes from science...

From the Earth to the Moon 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: 7. Elliptical Galaxies

Our 7th feature is about elliptical galaxies. Elliptical galaxies are the other main class of galaxies we find in our universe. They have a spherical stellar distribution, meaning simply that their stars' orbits are not in a plane any more, and instead have random orientations.

Boiling water with ice

Thermodynamics is a funny area of physics, where different physical quantities are profoundly connected. In this video we look at how reducing the pressure allows you to reduce the boiling point of water.  

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.

A60s – A Galactic Heartbeat


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