The solar system is a very large space. The sun is the big thing in the middle that has a gravitational pull on everything, and planets orbit around it. Mercury, Venus, Earth, and Mars are closest to the sun while Jupiter and Saturn are much farther away from it. Heavy space objects like asteroids or comets, including Earth’s moon, also occupy orbit space around this cosmic star of sorts.
Space planets are extraordinary space bodies that celestial space drives take extraordinary space drives on space trips to explore. The twelve space systems in space include: Mercury, Venus, Earth, Mars, Jupiter, Saturn ¨C one small moon of the giant planet Uranus is called “Miranda”; four small moons of the gas giant Saturn are Titan and three more areas of a few rocks and dust orbiting it. Probes have landed on only two of these are Mercury and Venus.
- Mercury is the closest space planet to the sun. It is a small, rocky planet with a barren surface. Mercury has no atmosphere and is very hot during the day because it is so close to the sun.
- Venus is the second space planet from the sun. It is a very large, rocky planet with a dense atmosphere. Venus has no water and is very hot because it traps sunlight in its atmosphere.
- Earth is the third space planet from the sun. It is the only space planet with water and an atmosphere. Earth has many different climates because it is located in the middle of the space solar system.
- Mars is the fourth space planet from the sun. It is a large, rocky planet with a thin atmosphere and many ice caps.
- Jupiter is the fifth space planet from the sun. It is a large, gaseous planet with belts of space dust and small space rocks around it. Jupiter has more than sixty-three moons. The “Galilean” space moons Io, Europa, Ganymede, and Callisto are bright space objects in space telescopes.
- Saturn is the sixth space planet from the sun. It is a large, gaseous planet with rings of space rocks around it. Space probes have landed on two of Saturn’s moons – Titan and Iapetus. Cassini is an unmanned space probe orbiting Jupiter that is studying Jupiter’s space weather system.
- Uranus is the seventh space planet from the sun. It has four small, rocky planets called “the Mira family”. Mira B is most likely a captured asteroid or comet with evidence of water ice on its surface. The Voyager 2 space probe passed close to Uranus in 1986 and took pictures showing ten rings around Uranus made up of millions of icy rock space bodies.
- Neptune is the eighth space planet from the sun. It is a large, gaseous planet with rings of space rocks around it. Voyager 2 space probe passed close to Neptune in 1989 and found six rings around this space planet.
- Pluto is the ninth space planet from the sun. Its orbit is very tilted compared to Earth’s orbit so Pluto can be closer to the sun than Neptune for twenty years at a time! Pluto has five moons but scientists do not know if they are captured asteroids or comets because they are too small to see clearly.
There are over 70 known space objects that could become new space planets in our solar system. The latest one was just discovered on October 15, 2008. It is about one-half the space size of Mercury.
Discoveries about Solar System Planets:
Some of the latest discoveries about space planets include new information about the atmospheres of planets outside of our solar system. For example, a new study has found that the hot gas giant exoplanet HD 209458b has a stratosphere. This means that it has layers of the atmosphere in which the temperature increases with height. The stratosphere of HD 209458b is estimated to be around 1,200 degrees Fahrenheit.
Another space planet that has just been discovered is Kepler-37b, which orbits its star in less than one Earth day. It also appears to be covered with lava and cooled magma, similar to the surface of Earth’s moon. One space scientist said this was probably because the space planet itself had cooled over time.
So far space missions have only landed on space objects in space, which are space bodies orbiting the space sun. Space missions to space planets are still in the early planning stages, but scientists are designing ways that humans could land on them someday.
Space planets are often difficult and expensive to study and explore and space scientists sometimes use space technology to learn more about space planets in distant parts of our universe. Telescopes like Hubble for example have been used to capture images of space planets that orbit other stars in our galaxy or exoplanets.
We hope that this article has helped you learn more about space planets. The solar system is a very interesting place. There are space planets all around us. You can see them with a telescope or binoculars if you have access to them. And if not, you can sometimes spot space planets in the sky at night.