What is dark matter and dark energy
By: D. Vogt
Our scientific understanding of the universe has had more than a few upheavals over the past century, beginning with revolutionary advances in theories of relativity and quantum physics. However, two puzzles continue to defy easy explanation: why regions around the universe seem to have more...
Understanding the second law of thermodynamics
By: D. Vogt
The second law of thermodynamics states that the entropy of a closed system always increases over time - or, in layman's terms, all things decay. It is one of the four fundamental laws of thermodynamics, and the most important for understanding the future energy state...
Product reviews: Celestron Dual Axis Motor Drive for CG-4
By: Matt Kelly
I have been watching the stars for many a year now, pushing further and further into the cosmos in an attempt to uncover the untouchable beauty of the heavens, more recently I have yearned for a way to record what I see so that I...
Product reviews: TAL x3 Barlow
By: Matt Kelly
Sometimes it really does pay to be frugal, in a hobby that not only requires a considerable investment of time but also slurps down cold hard cash like the world is ending. Since starting out in this hobby I have sunk enough money into astronomy...
What is at the center of a black hole?
By: Lijun He
One of the greatest challenges facing our physicists today are the mysteries of black holes. After being coined by John Wheeler in 1967, the phrase ‘black hole’ has spread throughout the planet. But yet we know very little about black holes. Black holes are...
What was the Arecibo Broadcast?
By: D. Vogt
The Arecibo Broadcast was a message broadcast from the massive Arecibo Observatory in Puerto Rico, in 1974, to the M13 globular star cluster. It will reach that cluster in about 25,000 years, although, of course, it is not known whether anyone will be there...
Debunking the erroneous Mars email about its closeness to Earth
By: D. Vogt
For several years now, rumours have been circulating through emails and on blogs that the planet Mars is currently undergoing an exceptionally close approach to the planet Earth, at the closest point of which it will be as large in our night sky as the...
Physics: Hawking proclaims 'Time travel will exist'
By: D. Vogt
For decades, time travel has been one of the most common tropes of popular science fiction. Today, a growing number of physicists and cosmologists are beginning to suggest that it might eventually become a reality - although not necessarily the casual back-and-forth phenomenon we saw...
The role of the sun in time travel theory
By: D. Vogt
In some popular science fiction, in which time travel is possible, the Sun - or some other star - is said to make possible an unusual and perhaps even controlled method of backwards time travel. This usually involves the intersection between the massive energy or...
By: Joyce V Harrison
The dictionary defines fireworks, also termed pyrotechnics, as manufactured chemicals designed to make a loud and brilliant explosion when lit. That hardly does justice to the awe they inspire in young and old alike. We never outgrow the fascination of watching the stars burst, the...

 

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