Mercury has virtually no atmosphere. It however has small traces of an atmosphere which consists minute quantities of Hydrogen, Oxygen, Sodium, Potassium and argon.

The sun appears 2 and a half times larger in Mercury's sky compared to the Earth's.

Mercury is the planet nearest to the sun. It has a diameter of 3,031 miles, about two-fifths the Earth's diameter.

New digital cockpit designs are referred to as 'glass cockpit'.

The first flying vehicle to exceed the speed of sound was the German V-2 Missile.

In 1908, Frenchman René Lorin invented the ramjet engine. This was realized only after many decades.

Sir Frank Whittle made the first patent for a turbojet as a powerplant.