References
10 – black hole a star - https://www.enotes.com/homework-help/what-difference-between-black-holes-neutron-stars-370318
https://www.nasa.gov/audience/forstudents/k-4/stories/nasa-knows/what-is-a-black-hole-k4.html
https://en.wikipedia.org/wiki/Neutron_star

9 – does moonlight exist - http://www.universetoday.com/75891/why-does-the-moon-shine/
http://www.skyandtelescope.com/astronomy-blogs/struck-moonlight12312014/

8 – eyes hurt looking at sun - http://lightm14.imascientist.org.uk/2014/03/07/why-does-the-light-from-the-sun-hurt-your-eyes-when-you-look-into-it/
http://scienceline.ucsb.edu/getkey.php?key=3269
http://fivethirtyeight.com/features/why-does-the-sun-hurt-my-eyes/

7 – Airplane name - https://www.quora.com/What-is-the-etymology-of-airplane
https://en.wikipedia.org/wiki/Airplane

6 – earth lava centre - http://www.madsci.org/posts/archives/2001-12/1008193714.Es.r.html
https://www.quora.com/If-the-core-of-our-planet-is-so-hot-why-doesnt-it-melt-the-rest-of-the-planet
http://physics.stackexchange.com/questions/287980/why-doesnt-the-heat-of-the-earths-core-diffuse-to-the-surface

5 – earth slowing down - http://spaceplace.nasa.gov/review/dr-marc-earth/earth-rotation.html
http://www.physlink.com/education/askexperts/ae695.cfm

4 – first bubble gum flavour -
http://www.funtrivia.com/askft/Question115994.html
http://wonderopolis.org/wonder/why-does-gum-lose-its-flavor/
http://www.ideafinder.com/history/inventions/bubblegum.htm

3 – first jet - https://en.wikipedia.org/wiki/De_Havilland_Comet
https://en.wikipedia.org/wiki/Heinkel_He_178
http://www.history.com/this-day-in-history/first-jet-makes-test-flight

2 – blind person see again - https://en.wikipedia.org/wiki/Recovery_from_blindness#Early_cases
https://www.wired.com/2003/07/bionic-eyes-benefit-the-blind/
http://www.medicalnewstoday.com/articles/291090.php

1 – cyclones different spin - https://www.quora.com/Why-do-cyclones-spin-clockwise-in-the-southern-hemisphere-and-counterclockwise-in-the-northern-hemisphere
http://www.abc.net.au/science/articles/2010/03/24/2853824.htm