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Category Archives: Sun
Post 6
Many people may remember the last total solar eclipse that was visible from North America. It occurred on August 21, 2017. The next total solar eclipse that covers North America, and the only one for the next 20 years, will occur on April 8, 2024—almost one year from today. Total solar eclipses are a fascinating […] Continue reading
Touching the Sun
Many space missions are aimed outwards, away from the center of our solar system into the deep unknown. Fewer are aimed inwards, because what else is there to explore? The Sun is a fiery ball of extraordinary mass that we likely have no hope of making contact with soon, but how close can we get? […] Continue reading
Nuclear Fusion
At noon on a hot summer’s day, have you ever wondered how the Sun acquires so much energy that the light coming from it, 150 million kilometers away, can bring so much heat that it even burns your eyes and skin? The answer lies in hydrogen fusion happening in the Sun’s core. In its initial […] Continue reading
Blog #3 – Theories For the Sun’s Energy Source
Many scientific theories attempted to explain the source of the Sun’s energy, and the very first hypothesis involved some explanation pertaining to chemical reactions and gravitational collapse. Chemical burning, however, was ruled since no chemically burning substance like wood or gasoline can account for the Sun’s enormous luminosity. As for gravitational collapse, the conversion of […] Continue reading
Blog Post 3: What will happen when our Sun dies???
Just as all things have a beginning, all things have an end. Unfortunately this applies to our Sun as well. As a kid, I used to think that the Sun was basically just like a lamp light in the sky. When a lamp runs out of batteries, all you have to do to make it […] Continue reading
Posted in Class, Sun
Tagged astro2110, blog3, Solar System
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Blog #4: Nuclear Fusion
Nuclear fusion is the process that drives star light formation and prevents the force of gravity of the star from collapsing into itself. In a nuclear fusion reaction, two smaller nuclei, typically hydrogen isotopes, bond together to form a helium atom while immense amounts of energy are released. The fusion between smaller atoms continues to […] Continue reading
nuclear fusion
Have you ever wondered why the sun shines? It’s a question that has inspired centuries of astronomers to come up with a wide variety of explanations. It was once thought that the sun shone because of chemical combustion, but we now know that there is nowhere near enough oxygen for that process to have sustained […] Continue reading
Solar Flares and the Carrington Event
We heard a little bit about the Carrington Event in class, and I wanted to know more about it. A solar flare is essentially a burst of energy on the Sun which sends electrified gas and subatomic particles toward Earth. In 1859, there was an abnormally large solar flare caused two geomagnetic storms known as […] Continue reading
Posted in Historical, Observables, Sun
Tagged astro2110, blog3, solar flare, Solar System: Sun
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Powered and Unpowered Gravity Assists
The farthest planets in the solar system are so distant, it is infeasible to reach them using only rockets. The delta-v, or change in velocity, required to propel a spacecraft to a gas giant like Saturn is far too impractical for today’s rockets to achieve. The main problem is that a spacecraft needs tons of […] Continue reading
Blog Post 2 – What was Stonehenge really for?
Most people have seen pictures or heard of Stonehenge, an ancient monument on the Salisbury Plain in England. Personally, while I had seen references to Stonehenge in the media, I never actually knew what it was for, or what people thought it was for. It has been difficult for historians to find a definitive answer, […] Continue reading
Posted in Class, Historical, Instruments, Moons, Sun
Tagged Archeoastronomy, astro2110, blog2, Solar System, stonehenge
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