Black Holes: A great mystery of the universe
Black holes are one of the greatest mysteries of our universe. However, using just a few concepts that we have learned in class, we can understand the basic constructs of black holes. A black hole is the result of a single point in space containing extreme mass (this point is called a singularity). Similar to…
Nuclear Fusion: The energy of the universe… but not the energy of the Earth?
Nuclear fusion is the fundamental source of energy generation in our universe. Stars (like our Sun) undergo nuclear fusion in their cores and emit energy in the form of heat and light. This stellar energy stands in the way of a dark, cold, lifeless universe, and provides the necessary ingredients for life on Earth. Sadly,…
Legacy Survey of Space and Time: The future of astronomical observation is here…. almost!
Just two years from now, the Vera C. Rubin Observatory will commence operations, beginning its mission to image nearly 40 billion celestial objects over 10 years! These observations will be made with the world’s largest digital camera and an enormous 8.4 meter (in diameter) telescope, ensuring that its images will be of the highest quality.…
Eratosthenes the Excellent??
Newton, Kepler, Galileo, Copernicus… Eratosthenes?? The name Eratosthenes is not as universally renowned, or even as known, as the likes of Newton or Galileo; however, his contributions are just as exceptional. More than 2200 years ago, around 240 BCE, Eratosthenes correctly measured the circumference of the Earth to within 5% of its true value. Considering…
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Alex's Astronomy Blog 