The Sombrero galaxy equivalent to 800 billion suns. it's located 30 million light-years from Earth. more details   Credit: NASA/ESA and The Hubble Heritage Team (STScI/AURA) ,  ESA/Hubble 

Eskimo Nebula It was discovered by Astronomer William herschel in 1787. The star at the center is similar to our own Sun. image credit 

Valles Marineris    This image taken by the Viking 1 Orbiter in 1980. The system of canyons is 200 kms wide, 4,000 kilometers in length, 1.8 kilometers deep at its lowest points. image credit