Questions with the keyword 'visible'

• I have 2 questions, How is aurora created and what country can you see it by Science Genie to Deborah, Euan, Maheen, Rob, Stu Comments: (No comments so far )
• are ghosts real and if they are can they be seen? by dc9oool to Deborah, Euan, Maheen, Rob, Stu Comments: (No comments so far )