Vlog

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 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...

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.

As we've seen in the previous vlog, spiral Galaxies started forming from the primordial protogalaxies about 11 billion years ago. The formation of spiral galaxies is important because it happened at the peak of population II stars formation and allowed for planets to form.

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.

I was asked by Larry, one of my students, about what would be the best place in the solar system to destroy the One Ring. Since the 25th of March is the anniversary of its destruction and the fall of Sauron I thought I’d dedicate this vlog to answering the question as seriously and as accurately as possible.