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Daily Archives: February 9, 2020
Spectroscopy and Space
Although Isaac Newton’s most famous contributions to astronomy are his laws of motion and gravitation, which he published in Principia, Newton also founded modern spectroscopy by publishing his second work, Opticks. Spectroscopy is an essential tool for astronomers because it allows them to not only analyze the presence of certain chemical elements, but also physicalContinue reading “Spectroscopy and Space” Continue reading
Posted in Instruments, Science
Tagged astro2110, astronomy, blog2, technology
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Is it possible for a star to be invisible?
One of the things I’ve always been most curious about on the topic of space is: is it possible for something that emits light (like a star) to emit light such as radio or gamma waves but not visible light? If such an object existed, it would be invisible to us, although it could stillContinue reading “Is it possible for a star to be invisible?” Continue reading
The Resurgence of Flat Earth Theory
While believers in a Flat Earth have always existed (even after it became widely understood that the Earth is a sphere), the number of “Flat Earthers” has grown (and continues to grow) at alarming rates. So how is a fact that has been proven thousands of different ways over a few thousand years rejected byContinue reading “The Resurgence of Flat Earth Theory” Continue reading
Posted in Class, Historical
Tagged astro2110, blog2, nature of science, Solar System: Terrestrials
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Ultraviolet Catastrophe
While we discussed in class the importance of blackbody spectra continuous spectra, there is an important historical footnote in understanding where the famous blackbody curve arises from. Physics in the late 1800’s and early 1900’s predicted the wavelength-intensity relationship to be I α 1/λ^4, using a derivation based on classical statistical mechanics. This relationship closelyContinue reading “Ultraviolet Catastrophe” Continue reading
Posted in Class, Historical, Light, Physics
Tagged astro2110, blog2, Einstein, ultraviolet
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Spring Tides and Neap Tides: How the Angle of the Sun and Moon Directly Impact How Earth is Stretched
The size and fluctuation of tides are directly related to geography and the physics of various places around Earth. The average size of tides, however, rises and falls each month in direct correlation to the angle of the Sun and Moon in relation to Earth. These extremes are called spring tides and neap tides, andContinue reading “Spring Tides and Neap Tides: How the Angle of the Sun and Moon Directly Impact How Earth is Stretched” Continue reading
Posted in Galaxies, Universe
Tagged astro2110, blog2, hubble, Solar System, space, spring, tides, Uncategorized
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The Origin of Tides: The Sun & The Moon
How much impact do The Sun and The Moon have on Earth’s tides? Also, what would happen to the Earth’s tides if there were no moon? These are questions that are covered in this blog post about tides. The Earth’s tides are results of the gravitational pull from the Sun and the Moon on Earth’sContinue reading “The Origin of Tides: The Sun & The Moon” Continue reading
Light and Vision
Humans can only see a limited range of all of the light that is in the universe. As learned in class, there is UV, radio, infrared, and Gamma ray waves. The light we can see is a small portion between the UV and infrared waves, but other animals rely on their ability to see light […] Continue reading
History of the Telescope
The telescope was first invented in the Netherlands in 1608. Its design quickly spread across Europe until it reached Galileo. Galileo spent years refining and redeveloping the telescope until it was much more powerful than before. He was able to observe many new astronomical phenomena such as the moons of Jupiter. For a while, GalileoContinue reading “History of the Telescope” Continue reading
What Causes Tides?
Have you ever been fishing? If you have, you probably know that your success partially depends on whether the ocean experiences a low tide or a high tide. But do you know the science behind what causes tides? Below is a quick and simple explanation why. Tides are caused by differential gravity. We know fromContinue reading “What Causes Tides?” Continue reading
The Daniel K. Inouye Solar Telescope!
From Earth, the Sun appears to be just a glowing yellow orb. However, the Daniel K. Inouye Solar Telescope in Hawaii has captured new images of the Sun that reveal its violent and explosive nature. This massive four-meter telescope has the technological capabilities that are necessary to better understand the Sun’s magnetic field and outer […] Continue reading
Posted in Instruments
Tagged astro2110, blog2, Solar System: Sun, telescope
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