Based on observing Mercury and comparing Mercury with Earth, it is inferred that Mercury has a large core that is rich in iron. Planetary geologists estimate that the core of Mercury is about 42% of the planet's total volume. Data from research performed by these geologists strongly suggests that the planet has a molten core. Mercury's core has a higher iron content than the core of any other major planet in the solar system.
Mercury
Just like Earth Mercury has 4 main layers, The inner core, the outter core, and the mantle, and the crust.
what made the tracks on planet mercury is rover, the space robot, who was sent from the nasa space station to look for any sign of human life on planet mercury.
Once it was mistaken as a star but after research it was a planet that looked like a star from a distance.
The Mariner10 space probe and the Mercury Messenger space probe.
It would look just like Mercury or the Moon or any other planet without weather.
It could be either Venus or Mercury, when they are in transit.
yes we can if you would like to look on Google images
Mercury. Whilst it is not the most dense (Earth being the most dense planet of the Solar System), without gravitation compression on the Earth, Mercury would be the most dense. So if Earth was the same size as Mercury, Mercury would be the densest planet. It is also the smallest planet.
Blueish
mercury looks like the moon ?and is gryish colour
Mars is the red planet, because it looks red on close approaches. The next close approach will be in the spring of 2014, you can have a look at it then.