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.  

Meet The Overly Powerful Black Hole RX J1532 I've been asked a few times about powerful supermassive black holes, and one of my old articles has suddenly become popular again, getting a thousand views in June, so I think we are in...

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!

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.

The Seven Wonders of the Milky Way The Seven Wonders of the Milky Way are: The Sagittarius stream, a long, complex, structure made of stars that wrap in polar orbit around the Galaxy. It consists of tidally stripped stars from the Sagittarius Dwarf Elliptical Galaxy. The...

The Universe in 10 Features: 8. Population I Stars 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...

A60s – A Galactic Heartbeat

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.