Black Holes and Unicorns
Dividing a number by zero yields what’s known as a mathematical singularity. The result of such a division is not infinite, but undefined.
Dividing a number by zero yields what’s known as a mathematical singularity. The result of such a division is not infinite, but undefined.
The Meganeura, which existed on Earth some 300 million years ago,
As of writing, Dimorphos has a 10,000 km long tail, some two weeks after NASA slammed a space probe into it. The tail may simply be due to the solar wind dragging debris with it into space. If so, we…
Here’s an article by National Geographic that sheds more light on the DART probe and its impact on Dimorphos orbit around Didymos.
The NASA DART probe that hit the asteroid Dimorphos on September 27 has shortened Dimorphos’ orbit around its
The NASA DART probe that I wrote about a year ago has reached its destination. It has crashed into an asteroid in order to alter its orbit
Newton assumes in his work that gravity is a monopole acting with equal force in all directions, regardless of intervening matter. These assumptions are central to his shell theorem which
Wikipedia's article on time dilation makes it sound like Einstein's equations are used to pre-calculate satellite orbits. However, there are too many unpredictable factors related to satellite orbits for this to be true. Unpredictable factors To mention but a few…
According to general relativity, clocks slow down in the presence of massive bodies. This is known as time dilation due to gravity. The effect of gravity is in other
Mercury makes its rounds around the sun faster than predicted by Newton. A consequence of this is that Mercury's orbital precession is greater than expected by 43 seconds of arc per century. Curved space-time vs. aether The mainstream explanation for this is…
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