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Sunlight on Mercury is as much as ___ times brighter than it is here on Earth
Because it is so close to the Sun, no spacecraft has ever visited Mercury.
Dress in layers! Mercury has the most extreme daily temperature fluctuations in the Solar System. Day and night temperatures can fluctuate by about how many degrees?
Mercury is the hottest planet in our solar system.
Mercury has just 38% of the __________ of Earth
the Earth’s core makes up 17% of Earth's volume. It is estimated that Mercury’s core makes up ___ of its volume.
The surface of Mercury is wrinkled. These wrinkles, called Lobate Scarps, are unique because?
Mercury is the smallest planet in our solar system
Mercury's discovery pre-dates its first historical mention by the Sumerians around 3,000 BC. Who is the planet Mercury named after?