1. A Dwarf Planet is a celestial body that is in orbit around the sun, has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes hydrostatic equilibrium (nearly round) shape, has not cleared the neighbourhood around its orbit, and is not a satellite. The major difference between a dwarf planet and a planet is that a planet has clear of other object sin the area of its orbit.
2. The first dwarf planet was Pluto and it was discovered at around 4pm on 18 February 1930.
3. The person who was involved in this discovery was a young astronomer named Clyde Tombaugh. The other group who also discovered some of the other dwarf planets is the International Astronomical Union (IAU.)
4. Some of the challenges that occurred
2. The first dwarf planet was Pluto and it was discovered at around 4pm on 18 February 1930.
3. The person who was involved in this discovery was a young astronomer named Clyde Tombaugh. The other group who also discovered some of the other dwarf planets is the International Astronomical Union (IAU.)
4. Some of the challenges that occurred