Distance from sun:.32 AU/orbital period in earth years:.24 years/size:.382 of earth/mass:.06 of earth/moons:0/atmosphere distinct featuresMercury's surface is heavily cratered and similar in appearance to Earth's Moon, indicating that it has been geologically inactive for billions of years. Due to its near lack of an atmosphere to retain heat, Mercury's surface experiences the steepest temperature gradient of all the planets, ranging from a very cold 100 K at night to a very hot 700 K during the day. Mercury's axis has the smallest tilt of any of the Solar System's planets, meaning that there are no seasons on its surface. Rotational period
Distance from sun . 72 AU/ orbital period in earth years .62 years/ size .949 of earth/ mass .82 of earth/ moons 0/ atmosphere co2 n2/ distinct featuresVenus is classified as a terrestrial planet and is sometimes called Earth's "sister planet" owing to their similar size, gravity, and bulk composition (Venus is both the closest planet to Earth and the planet closest in size to Earth
Distance from sun 1 AU/ orbital period in earth years 1/ size 1.2834 km/ mass 5.97 e 24 kg moons 1 atmosphere 78% n2 21% o2 .9% ar .03% co2 / distinct features the only planet to have known support for life
Distance from sun 1.52 AU/ orbital period in earth years 1.88 years/ size .532 of earth/ mass .11 of earth/ moons 2/ atmosphere co2 n2 distinct featuresMars is the fourth planet from the Sun and the second smallest planet in the Solar System. Named after the Roman god of war, it is often described as the "Red Planet", as the iron oxide prevalent on its surface gives it a reddish appearance.[14] Mars is a terrestrial planet with a thin atmosphere, having surface features reminiscent both of the impact craters of the Moon and the volcanoes, valleys, deserts, and polar ice caps of Earth. The rotational period and seasonal cycles of Mars are likewise similar to those of Earth, as is the tilt that produces the seasons.
Distance from the sun 5.20 AU/ orbital period in earth years 11. 86 years/ size 11.209 of earth/ mass 317.80 of earth/ moons 63/ atmosphere h2 he/ distinct featuresJupiter is the fifth planet from the Sun and the largest planet within the Solar System.[13] It is a gas giant with mass one-thousandth that of the Sun but is two and a half times the mass of all the other planets in our Solar System combined. Jupiter is classified as a gas giant along with Saturn, Uranus and Neptune. Together, these four planets are sometimes referred to as the Jovian or outer planets.
Distance from the sun 9.54 AU/ orbital period in earth years 29. 46 years/ size 9.449 of earth/ mass 95.20 of earth/ moons 61/ atmosphere h2 he distinct featuresSaturn is the sixth planet from the Sun and the second largest planet in the Solar System, after Jupiter. Named after the Roman god Saturn, its astronomical symbol (♄) represents the god's sickle. Saturn is a gas giant with an average radius about nine times that of Earth.[12][13] While only one-eighth the average density of Earth, with its larger volume Saturn is just over 95 times as massive as Earth.[14][15][16]
Distance from the sun 19.22 AU/ orbital period in earth years 84.01 years/ size 4.007 of earth/ mass 14 .60 of earth / moons 27/ atmosphere h2 he distinct featuresUranus is the seventh planet from the Sun. It has the third-largest planetary radius and fourth-largest planetary mass in the Solar System. It is named after the ancient Greek deity of the sky Uranus (Ancient Greek: Οὐρανός), the father of Cronus (Saturn) and grandfather of Zeus (Jupiter). Though it is visible to the naked eye like the five classical planets, it was never recognized as a planet by ancient observers because of its dimness and slow orbit.[16] Sir William Herschel announced its discovery on March 13, 1781, expanding the known boundaries of the Solar System for the first time in modern history. Uranus was also the first planet discovered with a telescope.
Distance from sun 30.06 AU/ orbital period in earth years 164.80 years/ size 3.883 of earth/ mass 17.20 of earth/ moons 13/ atmosphere h2 he/ distinct featuresNeptune is the eighth and farthest planet from the Sun in the Solar System. It is the fourth-largest planet by diameter and the third-largest by mass. Neptune is 17 times the mass of Earth and is somewhat more massive than its near-twin Uranus, which is 15 times the mass of Earth but not as dense.[12] On average, Neptune orbits the Sun at a distance of 30.1 AU, approximately 30 times the Earth–Sun distance. Named for the Roman god of the sea, its astronomical symbol is ♆, a stylized version of the god Neptune's trident.
Distance from sun 32.1 AU/ orbital period in earth years 248.09/ size .0059 of earth/ mass .00218 of earth/ moons 5/ atmosphere nitrogen methane and carbon monoxide / distinct featuresPluto, formal designation 134340 Pluto, is the second-most-massive known dwarf planet in the Solar System (after Eris) and the tenth-most-massive body observed directly orbiting the Sun. Originally classified as the ninth planet from the Sun, Pluto was recategorized as a dwarf planet and plutoid owing to the discovery that it is only one of several large bodies within the Kuiper belt.[h]