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Category: Astrophysics

Special theory of relativity explained to a 11 year old

Special theory of relativity explained to a 11 year old

Hey kid, Let me tell you about the ‘special theory of relativity’ that Einstein wrote about. I will try and explain in the simplest possible terms for a 11 year old kid.   We believe what we see (and if we hear anything, which we are not used to seeing, we find it difficult to understand and believe). In our world, even the fastest things move very slowly compared to the speed of light (e.g. earth goes around the sun…

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Long list of online resources for astronomy / astrophysics

Long list of online resources for astronomy / astrophysics

A long list of useful links when you want to study astronomy / astrophysics and the many topics that these sciences cover. Am posting them here as much as a reference for myself as anyone else who cares for this subject.   Astro Picture of the day http://apod.nasa.gov/apod/astropix.html   Nobel lauerate Gerhard ‘t Hooft: How to become a GOOD theoretical physicist. It’s a long list of recommended topics for you to study with links to many resources http://www.staff.science.uu.nl/~gadda001/goodtheorist/index.html   Common Misconceptions…

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Help your kids visualize the awesome vastness of the solar system and the universe

Help your kids visualize the awesome vastness of the solar system and the universe

Have you tried explaining to your kids how vast the solar system and the universe beyond is? Chances are you have felt challenged to do so. You need special tools to be able to comprehend how big the universe is. This is because it is very (very^infinite) huge. There are two issues involved. The numbers are always very big and we don’t see those sizes / distances in the immediate world we live in. Compared to the size of the heavenly bodies,…

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Solar system and beyond: Compare sizes, distances and masses of astronomical bodies

Solar system and beyond: Compare sizes, distances and masses of astronomical bodies

I have often wished I could find facts and numbers about the solar system and beyond in one place. For example, data on size, distance and mass about the most commonly talked about heavenly bodies. Or alternatively, relative comparisons between them? Sample these questions that often hit me. How big is the Milky way? How much bigger is it in comparison to our solar system? How many earths is the sun equal to?