Jupiter is the largest, at 318 Earth masses, whereas Mercury is the smallest, at 0.055 Earth masses.
Mercury is the smallest and innermost planet in the Solar System.
Mercury's surface is similar in appearance to that of the Moon.
On March 13.1781 ; William Herschel discovers Uranus. source
On March 13.1781 ; William Herschel discovers Uranus.
On March 13.1930 ; The news of the discovery of Pluto is telegraphed to the Harvard College Observatory. source
On March 13.1930 ; The news of the discovery of Pluto is telegraphed to the Harvard College Observatory.
On April 17.2014 ; NASA's Kepler confirms the discovery of the first Earth-size planet in the habitable zone of another star. source
On April 17.2014 ; NASA's Kepler confirms the discovery of the first Earth-size planet in the habitable zone of another star.
On June 9.2004 ; The first Venus Transit in well over a century takes place, the previous one being in 1882. source
On June 9.2004 ; The first Venus Transit in well over a century takes place, the previous one being in 1882.
On July 29.2005 ; Astronomers announce their discovery of the dwarf planet Eris. source
On July 29.2005 ; Astronomers announce their discovery of the dwarf planet Eris.
Vulcan is a small hypothetical planet that was proposed to exist in an orbit between Mercury and the Sun.
On October 10.1846 ; Triton, the largest moon of the planet Neptune, is discovered by English astronomer William Lassell. source
On October 10.1846 ; Triton, the largest moon of the planet Neptune, is discovered by English astronomer William Lassell.
Jupiter is bigger than all the other planets combined. source
Jupiter is bigger than all the other planets combined.
