I learned this today. Gold is so rare because it takes a staggeringly large amount of energy to produce it naturally. Gold has been treasured for as long as humans have been able to find it because of its unique properties. It is resistant to corrosion, conducts electricity and heat very well, doesn’t tarnish, is […]
#56 Why is gold so rare? Read More »
I learned this today. Mars is red because it is basically rusty. The surface of Mars is covered in a deep layer of fine iron oxide dust. Iron oxide is caused when iron oxidizes. Iron oxide is the chemical name for rust. Iron molecules combine very easily with oxygen molecules. For iron to rust, you
#44 Why is Mars red? Read More »
I learned this today. Pluto has been classified as a dwarf planet instead of a planet because it only meets two out the of the three criteria required of a planet. The International Astronomical Union came up with the definition of a planet in August 2006. They said that an object is a planet if:
#18 Why isn’t Pluto a planet? Read More »
