Make your own sundial https://www.youtube.com/watch?v=e5WrTA1HScI

https://www.youtube.com/watch?v=L0FtCObONp4

 https://astronomerswithoutborders.org/319-awb-blog/dark/astroarts-blog/astrocrafts/2278-astrocrafts-sundials-nature-s-sun-clocks.html

 https://www.youtube.com/channel/UCT7EcU7rC44DiS3RkfZzZMg

konark temple https://www.youtube.com/watch?v=PHcO5TTGZEQ

kids water clock https://www.youtube.com/watch?v=CZYd8NwC8Sk

why days of week named so https://nileshoak.wordpress.com/2016/09/04/origin-of-weekday-names/ 

Jantar Mantar

http://www.cornell.edu/video/jantar-mantar-1-introduction 

 http://www.cornell.edu/video/jantar-mantar-3-astronomical-instruments

world's oldest astronimical yantras

http://www.jantarmantar.org/learn/observatories/instruments/daksinottaraBhitti/index.html

Creation of uNiverse -complete good one

Astronomy Video link

How small Earth is?

Here is about how Indian Astronomers found Saturday Sunday monday tuesday etc https://nileshoak.wordpress.com/2016/09/04/origin-of-weekday-names/

Lunar Phases

 Excellent animation of lunar phases

Game on Lunar phase

Why Lunar pheases occur?

Quiz on Lunar phases

comparitive size of planets

http://www.troybrophy.com/projects/solarsystem/planetaryscale.html

Heliophysics

http://c2h2.ifa.hawaii.edu/

Saturn rings video

good articles

Good science physics discussion blog

Earth rotation not simple as thought