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The universe contains everything that the Milky Way and the Solar System contain and much, much more. Considering every single possibility, there is a chance of a habitable planet, just like earth

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The Milky Way is a barred spiral galaxy, about 100,000 light-years across

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A comet has four components: a nucleus, a coma, a dust tail and an ion tail. A popular comet is Halley's Comet, which is only visible every 75-76 years.

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A “dwarf planet” is a celestial body that is in orbit around the Sun, but is not a satellite.

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Exoplanet Exploration: Planets Beyond our Solar System

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Researchers studying what appears to be a beefed-up version of our solar system have discovered that it is encased in a halo of fine dust. The findings are based on infrared data from NASA's Spitzer Space Telescope and the European Space Agency's Herschel Space Observatory, in which NASA is a partner.

The dusty star system, called HD 95086, is located 295 light-years from Earth in the constellation Carina. It is thought to include two belts of dust, which lie within the newfound outer dust halo. One of these belts is warm and closer to its star, as is the case with our solar system's asteroid belt, while the second belt is cooler and farther out, similar to our own Kuiper belt of icy comets.

"By looking at other star systems like these, we can piece together how our own solar system came to be," said Kate Su, an associate astronomer at the University of Arizona, Tucson, and lead author of the paper.

Within our solar system, the planets Jupiter, Saturn, Uranus and Neptune are sandwiched between the two dust belts. Scientists think something similar is happening in the star system HD 95086, only on larger scales. One planet, about five times the mass of Jupiter, is already known to sit right inside HD 95086's cooler belt. Other massive planets may be lurking between the two dust belts, waiting to be discovered.

Studies like this from Spitzer and Herschel point the way for ground-based telescopes to snap pictures of such planets in hiding, a technique referred to as direct imaging. The one planet known to exist in HD 95086 was, in fact, discovered and imaged using this technique in 2013. The images aren't sharp because the planets are so faint and far away, but they reveal new information about the global architecture of a planetary system.

"By knowing where the debris is, plus the properties of the known planet in the system, we can get an idea of what other kinds of planets can be there," said Sarah Morrison, a co-author of the paper and a PhD student at the University of Arizona. She ran computer models to constrain the possibilities of how many planets are likely to inhabit the system. "We know that we should be looking for multiple planets instead of a single giant planet."

To learn what HD 95086 looks like, the astronomers turned to a similar star system called HR 8799. It too has an inner and outer belt of debris surrounded by a large halo of fine dust, and four known planets between the belts -- among the first exoplanets, or planets beyond our solar system, to be directly imaged.

Comparing data from the two star systems hints that HD95086, like its cousin HR 8799, is a possible home to multiple planets that have yet to be seen. Ground-based telescopes might be able to take pictures of the family of planets.

Both HD 95086 and HR 8799 are much younger and dustier than our solar system. When planetary systems are young and still forming, collisions between growing planetary bodies, asteroids and comets kick up dust. Some of the dust coagulates into planets, some winds up in the belts, and the rest is either blown out into a halo, or funneled onto the star.

Herschel and Spitzer are ideally suited to study the dust structures in these systems, which glow at the infrared wavelengths the telescopes detect.

The researchers will present the findings at the Division for Planetary Science Meeting of the American Astronomical Society held in Tucson, Arizona from Nov. 8 to 15.

Read more about the research at:
http://uanews.org/story/baby-photos-of-a-scaled-up-solar-system
Other coauthors of the paper include Zoltan Balog at the Max-Planck Institute of Astronomy, Heidelberg, Germany, and Renu Malhotra, Paul Smith and George Rieke of the University of Arizona.

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national aeronautics and space administration

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Researchers studying what appears to be a beefed-up version of our solar system have discovered that it is encased in a halo of fine dust. The findings are based on infrared data from NASA's Spitzer Space Telescope and the European Space Agency's Herschel Space Observatory, in which NASA is a partner.

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Extending farther than the Kuiper Belt, and theoretically extends from 5,000 to 100,000 times the distance of Earth to the sun. It has up to 2 trillion icy bodies within it.

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Results from the Rosetta and Philae spacecraft show that the nucleus of 67P/Churyumov-Gerasimenko has no magnetic field, which suggests that magnetism may not have played a role in the early formation of planetesimals.

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A planet which is hypothesized to be 10 times the mass of earth.

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There is a possibility of a black hole right inside of our solar system, and a massive one at that.

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These planets could be possibly habitable

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The Kuiper Belt's icy bodies contain the planet Pluto

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Pluto has 5 moons; Charon, Hydra, Nix, Kerberos, Styx

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Neptune has 14 moons; Triton, Proteus, Nereid, Larissa, Galatea, Despina, Thalassa, Naiad, Halimede, Neso, Sao, Laomedeia, Psamathe, S/2004 N1

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Uranus has 27 moons; Titania, Oberon, Umbriel, Ariel, Miranda, Sycorax, Puck, Portia, Juliet, Caliban, Belinda, Cressida, Rosalind, Desdemona, Bianca, Ophelia, Cordelia, Perdita, Prospero, Setebos, Mab, Stephano, Cupid, Francisco, Ferdinand, Margaret, Trinculo

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Saturn has 62 moons. Here is my favorite of Saturn's moons

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Jupiter has 69 moons but that's a lot so here is my favorite.

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Mars has 2 moons; Phobos and Deimos

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thriller

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Pluto is not considered to be a planet, but Viva la Pluto.
Pluto sometimes has an atmosphere.
When Pluto elliptical orbit takes it closer to the Sun, its surface ice thaws and forms a thin atmosphere

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Due to its blue coloration, Neptune was named after the Roman god of the Sea.

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Uranus turns on its axis once every 17 hours, 14 minutes.
The planet rotates in a retrograde direction, opposite to the way Earth and most other planets turn.

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Saturn is best known for its fabulous ring system that was first observed in 1610 by the astronomer Galileo Galilei

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Jupiter is two and a half times more massive than all the other planets in the solar system combined

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The asteroid belt separates the first four planets from the rest.

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Mars is a terrestrial planet with a thin atmosphere composed primarily of carbon dioxide.

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the only world known to support an atmosphere with free oxygen, oceans of liquid water on the surface and — the big one — life.

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Venus is the second brightest object in the night sky after the Moon.

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For every 2 orbits of the Sun, which takes around 88 Earth days, Mercury completes three rotations of its axis.

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Did you know that if you look up at the sun right now, you are actually looking at the sun from eight minutes ago?

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Consists of the sun, the eight (poor Pluto) planets, and trillions of bodies. Not human bodies, just... space-y bodies.

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The solar system is made up of the and everything that orbits around it, including , moons, , and meteoroids. It extends from the sun, called Sol by the ancient Romans, and goes past the four inner planets, through the Asteroid Belt to the four gas giants and on to the disk-shaped Kuiper Belt and far beyond to the teardrop-shaped heliopause. Scientists estimate that the edge of the solar system is about 9 billion miles (15 billion kilometers) from the sun. Beyond the heliopause lies the giant, spherical , which is thought to surround the solar system.

How was the solar system discovered?

For millennia, astronomers have followed points of light that seemed to move among the stars. The ancient Greeks named them planets, meaning "wanderers." , , , and were known in antiquity, and the invention of the telescope added the Asteroid Belt, , , and many of these worlds' moons. The dawn of the space age saw dozens of probes launched to explore our system, an adventure that continues today.

There have been five human-made objects so far, , , New Horizons, Pioneer 10 and Pioneer 11, that have crossed the threshold into interstellar space.
Related: How much of the solar system is made of interstellar stuff?
The discovery of kicked off a rash of new discoveries of dwarf planets, and eventually led to the International Astronomical Union revising the definition of a "planet." The revision changed 's status from planet to dwarf planet in 2006, a decision that remains controversial - especially after the New Horizons mission found immense geological variety on the world in 2015.

Astronomers are now hunting for another planet in our solar system, a true ninth planet, after evidence of its existence was unveiled on Jan. 20, 2016. The so-called "Planet Nine," as scientists are calling it, is about 10 times the mass of and orbits the sun as close as 200 astronomical units (AU). One AU is the distance from Earth to the sun - about 93 million miles (150 million km).

How did the solar system form?

Many scientists think our solar system formed from a giant, rotating cloud of gas and dust known as the solar nebula. As the nebula collapsed because of its gravity, it spun faster and flattened into a disk. Most of the material was pulled toward the center to form the sun. Other particles within the disk collided and stuck together to form asteroid-sized objects named as planetesimals, some of which combined to become the asteroids, comets, moons and planets.

The from the sun was so powerful that it swept away most of the lighter elements, such as hydrogen and helium, from the innermost planets, leaving behind mostly small, rocky worlds. The solar wind was much weaker in the outer regions, however, resulting in gas giants made up mostly of hydrogen and helium.

The sun is by far the largest object in our solar system, containing 99.8% of the solar system's mass. It sheds most of the heat and light that makes life possible on Earth and possibly elsewhere. Planets orbit the sun in oval-shaped paths called ellipses, with the sun slightly off-center of each ellipse. NASA has a fleet of spacecraft observing the sun, such as the Parker Solar Probe, to learn more about its composition, and to make better predictions about solar activity and its effect on Earth.

Inner solar system

The four inner four planets - Mercury, Venus, Earth and Mars - are made up mostly of iron and rock. They are known as terrestrial or earth-like planets because of their similar size and composition. Earth has one natural satellite - the moon - and Mars has two moons - Deimos and Phobos.

Between Mars and Jupiter lies the Asteroid Belt. Asteroids are minor planets, and scientists estimate there are more than 750,000 of them with diameters larger than three-fifths of a mile (1 km) and millions of smaller asteroids. The dwarf planet Ceres, about 590 miles (950 km) in diameter, resides here. A number of asteroids have orbits that take them closer into the solar system that sometimes lead them to collide with Earth or the other inner planets.
Related: Why do the planets in the solar system orbit on the same plane?
Earth is surrounded by a flotilla of spacecraft, and Mars has been visited by many spacecraft as well. Some of the more prominent Martian missions include the Perseverance rover, lander, Tianwen-1 rover, Curiosity rover, the Opportunity and rovers, the Mars Reconnaissance Orbiter (which takes high-resolution pictures from orbit) and the Viking landers and rovers.

Venus has been explored by American, European and Soviet spacecraft, such as Venera 13 over the decades. NASA announced in June 2021 that it will launch two missions to Venus by 2030 - an orbiter called VERITAS and an atmospheric probe called DAVINCI+.

Mercury has been host to several flybys and two-long term missions: MESSENGER (now concluded) and BepiColombo.

Outer solar system

The outer planets - Jupiter, Saturn, Uranus and Neptune - are giant worlds with thick outer layers of gas. Between these planets, they have dozens of moons with a variety of compositions, ranging from rocky to icy to even volcanic (such as in the case of Jupiter's .) Nearly all the planets' mass is made up of hydrogen and helium, giving them compositions like that of the sun. Beneath these outer layers, they have no solid surfaces - the pressure from their thick atmospheres liquefy their insides, although they might have rocky cores. Rings of dust, rock, and ice encircle all these giants, with Saturn's being the most famous.

Comets are often known as dirty snowballs, and consist mainly of ice and rock. When a comet's orbit takes it close to the sun, some of the ice in its central nucleus turns into gas that shoots out of the comet's sunlit side, which the solar wind carries outward to form into a long tail. Short-period comets that complete their orbits in less than 200 years are thought to originate from the disk-shaped Kuiper Belt, while long-period comets that take more than 200 years to return are thought to come from the spherical Oort Cloud.

Jupiter and Saturn have each been visited by several spacecraft, and were also host to long-term missions including Juno and Galileo at Jupiter, and Cassini at Saturn. Uranus and Neptune, however, have only been seen during one spacecraft flyby - that of Voyager 2 in the 1980s. Some scientists are working on creating a Uranus or Neptune orbiter to fly there in the 2030s or so. Scientists do observations from the ground as well, to track the long-term changes in weather and cloud formations in the gas giants.

Trans-Neptunian region

Astronomers had long suspected that a band of icy material known as the Kuiper Belt existed past the orbit of Neptune extending from about 30 to 55 times the distance of Earth to the sun, and from the last decade of the 20th century up to now, they have found more than a thousand of such objects. Scientists estimate the Kuiper Belt is likely home to hundreds of thousands of icy bodies larger than 60 miles (100 km) wide, as well as an estimated trillion or more comets.
Related: What if Planet Nine is a baby black hole?
Pluto, now considered a dwarf planet, dwells in the Kuiper Belt. It is not alone - recent additions include Makemake, Haumea and Eris. Another Kuiper Belt object dubbed Quaoar is probably massive enough to be considered a dwarf planet, but it has not been classified as such yet. Sedna, which is about three-fourths the size of Pluto, is the first dwarf planet discovered in the Oort Cloud. NASA's New Horizons mission performed history's first flyby of the Pluto system on July 14, 2015.

If Planet Nine exists, it orbits the sun at a distance that is 20 times farther out than the orbit of Neptune. (The orbit of Neptune is 2.7 billion miles from the sun at its closest point.) The strange world's orbit is about 600 times farther from the sun than the Earth's orbit is from the star. Scientists have not actually seen Planet Nine directly, and some astronomers debate its existence, which was inferred by its gravitational effects on other objects in the Kuiper Belt.

Past the Kuiper Belt is the very edge of the solar system, the heliosphere, a vast, teardrop-shaped region of space containing electrically charged particles given off by the sun. Many astronomers think that the limit of the heliosphere, known as the heliopause, is about 9 billion miles (15 billion km) from the sun.

The Oort Cloud lies well past the Kuiper Belt, and theoretically extends between 5 and 100,000 astronomical units (AU), the distance between the sun and Earth (about 93,000,000 miles or 150 million kilometers), and is home to up to 2 trillion icy bodies.

Additional resources

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Solar System Facts: A Guide to Things Orbiting Our Sun

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The solar system is made up of the and everything that orbits around it, including , moons, , and meteoroids. It extends from the sun, called Sol by the ancient Romans, and goes past the four inner planets, through the Asteroid Belt to the four gas giants and on to the disk-shaped Kuiper Belt and far beyond to the teardrop-shaped heliopause.