Category Archives: general relativity

Newton’s Law of Gravitation and General Relativity

Isaac Newton’s law of universal gravitation first appeared in the Philosophiæ Naturalis Principia Mathematica in July 1687. It describes why that apple fell on Newton’s head (as some stories would have it), why we stay rooted to the ground (without drifting off into space), and why the Earth is locked in orbit around the Sun (among … Continue reading Newton’s Law of Gravitation and General Relativity Continue reading Continue reading

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The Consequences of the Interaction of Light and Gravity

It is astonishing the extent that gravity and light interact with one another.  This is of course very fortunate for us humans when trying to understand the basic force that is known as gravity.  After Isaac Newton proposed his Law of Universal Gravitation in 1687 is was generally thought that gravity was understood even though […] Continue reading Continue reading

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Smiling Galaxy Cluster Found in Space!

That’s some intense gravitation lensing! A cluster of galaxies was recently discovered by the Hubble Telescope (AKA, uber relevant to class!) that appears to take on the shape of a bright smiling face. The galaxy cluster, known as SDSS J1038+4849, recently had the above picture taken by said telescope. While it may appear to us that […] Continue reading Continue reading

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