Videos
Smashing Galaxies – The Documentary
This documentary explores the tumultuous lives of galaxies with a focus on galaxy collision: the key mechanism in galaxy evolution.
Latest
Science Playground
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 remain in the jug, as the density of CO2 is around 1.98 kg/m3, making it denser than the average density.
The Astroholic Live
The Astroholic LIVE – Halloween Spooktacular 2
We are back with Russell Moul to look again at the creepy and weird side of Science. From embalming to proton beams, from cryogenics to voltaic piles ending in the cost of our progress and prosperity. Happy Halloween!
Exoplanet
Some Earths Like It Hot
Planetary systems form from the same cloud as its parent star. As the cloud contracts under the effect of gravity, the gas acquires more angular velocity. Spinning faster it flattens out into a disk where eventually planets end up forming. This simplistic approach has been shown to be correct by ...
Future Moon Bases Are At Risk From Meteorites
A Moon base is many geeks dream, and it is believed to be a crucial first step towards the colonisation of the solar system. Everywhere outside our planet is an inhospitable environment, however a Moon base would still be close enough restock with food or fuel fairly quickly. A new piece of rese...
How About That?
PodcAstroholic – What is dark energy?
We explain what dark energy is in only 60 seconds.
Podcastroholic
PodcAstroholic – What is dark matter?
We explain what dark matter is in only 60 seconds.
How About That?
Leaving The Universe Behind
If the known universe was spherical would it be possible to move outside of it the same way a rocket can leave the Earth? Justin, New Zealand Oh that’s an interesting question. Could it be possible to leave our Universe? Probably not, but you don’t ask exactly that. You picked a specific universe.
Astronomy
The Astroholic Live – Proxima b, Warp Drive & Alzheimer’s cure
Another episode of the Astroholic Live. This time we answer many plausible and implausible questions, and comment on the latest news from Astronomy and Medicine
Astronomy
A ‘Van Gogh View’ Of The Polaris Flare
Space images can often be breathtaking and the night sky has often inspired artists to produce incredible masterpieces. Sometimes even the way astronomers represent data can be both scientifically and artistically stunning. Case in point is the polarization map released by the Planck Collaboratio...
Journal Club
Interstellar Travel Meets The Real Universe
Interstellar travel is about to go from a Sci-fi idea to physical reality, but the jump comes with a series of considerations that fiction writers don’t have to consider. This could work as an introduction for the apparent lack of toilets in Star Trek, but it’s actually something else. You see, s...
Journal Club
Testing Relativity With Nothing
There are two big problems with astrophysics, and they are called dark energy and dark matter. Dark energy is responsible for the accelerated expansion of the Universe. Dark matter keeps the galaxies together, and we think it’s made of particles which don’t emit any light. We don’t know exactly w...