Gold’s molar mass is about 196 while aluminum is about 27, thus 50cm of gold has more mass
Very specific alignment of the Sun, Earth, and Moon. If the Moon is lined up precisely with the Sun from the Earth's point of view, the Moon will block Sunlight from reaching the Earth, causing a solar eclipse.
The temperature of a gas in which the atoms are moving slowly is (THE COLD).
THAT'S IT! :)