Is solar battery invention or discovery?

What level does Groudon have to be to learn solar beam? Who invented 69 position? Is the Hubble telescope a geostationary satellite? How many stars are in the constellation Libra have? Why is it better to go fishing when the moon is not visible in the sky? How old do you have to be to skydive in the UK? What inner planet has the thickest atmosphere? What new technologies existed to make the age of exploration possible? What is the difference between dwarf planets and asteroids? What is Mars' relative position to the Sun? Do moose eyes reflect light at night? What is the angle between the noon sun on the winter solstice and the southern horizon for an observer at a latitude of 38 N? How long is the lunar night? What methods do astronauts use to prevent the food to spoil in the space? What color star is Electra? Which planet would a person be the most likely to survive a 50 meter drop with no parachute? How did Hestia use her powers? What was NOT used by Wegener to support his hypothesis of continental drift? Is there gravity on the stars? Why do you see seven impact craters on the moon but few on earth?

Is solar battery invention or discovery?