Space

• Mercury is very close to the sun
• Venus is better known as the Evening or the Morning star.It is also called the earth's twin because of its similar size, density and mass
• Venus has no moon
• Earth is the third planet in terms of distance from the sun
• Mars is also called Red planet 

Space

• On a clear night you can see about 3000 stars with naked eye
• The sun is a star, it is nearer to the earth
• The star nearest to the earth after the sun is Alpha centuari, which is at a distance of about 4.3 light year
• The earth rotates from west to east
• Mercury has no atmosphere