= Answer: = In ancient times, "planet" merely meant "wanderer" in reference to the celestial objects that appeared to wander around the sky differently than the fixed background stars. With that definition, anything that wandered the sky was a planet, including the sun and moon. With the many astronomical discoveries over time leading to better understanding of the cosmos, planets typically referred to those objects which orbit the sun, and presumably analogous objects which undoubtedly orbit distant stars. The term was still very ambiguous, though, so in 2005, the International Astronomical Union (IAU) made a list of three characteristics that an object must have to be considered a planet, thus giving the word "planet" an unambiguous definition for the first time. Those characteristics are:
* A planet is any object in orbit around the Sun with a diameter greater than 2000 km. * A planet is any object in orbit around the Sun whose shape is stable due to its own gravity. * A planet is any object in orbit around the Sun that is dominant in its immediate neighborhood.
Any analogous object which fits these characteristics but is in orbit around a star other than the sun would be considered an Extra-Solar planet. As more discoveries are made, the definition may require further fine-tuning. But for now, those are the things which make a planet a planet. It is also important to note that there are identifiers, or words which specify other attributes of a planet. For example, there are major and planets which gives more information regarding their size. There are also primary, secondary, and tertiary planets, specifying whether the object is orbiting the star, another planet, or a natural satellite.
# They are made of rock # They do not posses rings
All terrestrial planets—Mercury, Venus, Earth, and Mars—share a solid, rocky surface composed primarily of silicate minerals and metals. They possess a differentiated internal structure with a core, mantle, and crust. Additionally, these planets have relatively thin atmospheres compared to gas giants, and their surfaces exhibit various geological features such as craters, mountains, and valleys.
They have in common is that they are the last planets in the solar system
they al are outer planets.
A non-starter because the Sun is NOT a planet! It is the star about which the planets orbit.
All congressional members share some common features in the United States. They must all be at least 25 years of age, and they have all been elected to their positions.
# They are made of rock # They do not posses rings
figure it out
The outer planets' names are Jupiter, Saturn, Uranus, Neptune, and Pluto. The 4 outer planets closest to the sun are all known as the gas giants. They all have a longer year than the inner planets. And they all are colder than the inner planets.
All animals nned to eat, breathe, and reproduce in order to live and sustain their species.
All terrestrial planets—Mercury, Venus, Earth, and Mars—share a solid, rocky surface composed primarily of silicate minerals and metals. They possess a differentiated internal structure with a core, mantle, and crust. Additionally, these planets have relatively thin atmospheres compared to gas giants, and their surfaces exhibit various geological features such as craters, mountains, and valleys.
Inner planets are also known as Terrestial planets which means they all have a rocky surface.
they all have magma chambers, they all have pipes, vents, and craters. they all erupt at somepoint .so there you go.
They have in common is that they are the last planets in the solar system
they al are outer planets.
they al are outer planets.
Answer:"They all share a common purpose, philosophy, and enterprise."