It is generally agreed that the earth's moon was formed when a Mars sized planet grazed the early earth. Is it possible that this planet was slightly bigger and that it not only formed the moon but the left over went on to end up as Mercury?

Mecury 4878 KM Venus 12104KM Earth 12756KM Mars 6794KM Jupiter 142800 Saturn 120000KM Uranus 52000KM Newptune 48400KM Pluto 3200km. Data from BAA hand book.

The diameters of Mercury and Moon are 4879 km and 3475 km.

Using Newton's gravitational force equation $F=(Gm_1m_2)/(r^2)$ and assuming that the mass of is $m_1=5.972*10^24kg$ and $m_2$ is the given mass of the moon with $G$ being $6.674*10^-11Nm^2/(kg)^2$ gives $1.989*10^20...

You radio wave should travel at the speed of light in vacuum $c=3xx10^8m/s$ so basically it would take (velocity=distance/time rearranged): $t=d/c=(8.2xx10^10)/(3xx10^8)=273s$ to reach Mars.

Earth's diameter at equator 12756 kilometers. Mars diameter at equator 6794 kilometers.

Olympus mons the highest volcano is about 27 kilometers in height on mars. But on Earth Everest is only 8.8 kilometers.

Diameter of Mars 6792 kilometers.Mercury 4879 Kilometers and Moon 3748 kilometers. date from planetary fact files NASA

Sometime before 5 billion years ago, a cloud of gas and dust formed in our galaxy. That cloud would. mostly colapse into our Sun between 5 and 4.6 billion years...

It is possible for a moon to capture an asteroid which then goes into orbit around it to become a moon. The problem is that many moons, such as our...

We need to (i) find the volume of mercury; and (ii) convert this volume into a mass by use of the quoted . $"Volume of mercury"$ $=$ $76.0*cmxxpixx(0.5*cm)^2$ $=$ $59.7$...