What happens during the lifespan of a star
By: D. Vogt
All stars follow essentially the same life cycle, although they vary widely in terms of their size, mass, brightness, temperature, and in some small ways their chemical composition (referred to as metallicity). First, they form out of giant molecular clouds, amassing enough size that they...
Colonizing Mars
By: Edgar Craven
Man living on Mars? Is it likely? Is it even feasible? Is it morally acceptable, considering humankind's natural talents for consumption? I agree. It sounds a little crazy. A little extreme even. However, in the inevitable case when life on Earth may cease, whether Doomsday...
The Andromeda Galaxy (M31)
By: D. Vogt
The Andromeda Galaxy is the closest major galaxy to our own home, the Milky Way Galaxy. Like our own, it is a spiral galaxy, meaning the core is orbited by massive "arms," or bands of star-rich regions. Together with a few dozen other galaxies...
By: Ernest Capraro
Hydrocarbons are molecules made of only the two elements: carbon and hydrogen. One might think that with only two building blocks, hydrocarbon chemistry would be quite limited. The reality is that hydrocarbon chemistry is extensive, and plays a significant part in daily life. Hydrocarbons are...
Guide to solar (photovoltaic) cells
By: Marvin Somers
Photovoltaic cells convert sunlight into energy and are used in applications such as solar panels to generate electricity. They work using a semiconducting metal (silicon) that reacts to incoming particles of light energy, known as photons. To understand this process first requires an understanding of...
Space exploration in the future
By: David Maloy
We are starting to talk about going to Mars more and more every day. Many still want to put all our efforts into building on the moon and others want to expand and create more space stations. But when it's all said and done, we...
The possibility of the star Eta Carinae going supernova
By: D. Vogt
Eight thousand light years from the Earth, the star Eta Carinae is in its death throes. This is a binary star system with a luminous blue variable star in the last stages of its life, which could explode into a supernova within the next several...
How to empirically demonstrate chemical equilibrium
By: Mishra Planeswalker
Chemical Equilibrium is defined as a state of reaction where the rate of change in the reactants and the products remains constant. Note that the amounts of the different entities need not be constant, only their respective rates of change. Because many chemical equilibria take...
What is a black hole
By: Elton Gahr
If you’ve read or watched any science fiction the odds are good that at some point you have come across the concept of a black hole. These are scattered across science fiction stories and while sometimes there is a cursory explanation of what they...
The Virgo cluster of galaxies
By: D. Vogt
The Virgo Cluster is a galaxy cluster located about 60 million light-years from the Earth, consisting of over a thousand individual galaxies. It is at the astronomical centre of the Virgo Supercluster (a group of galaxy clusters, including our own), and features both spiral and...

 

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