Astronomers have discovered a planet named Pluto in the system of stars that makes up the main spiral arm of the Milky Way.
The planet orbits the sun at a distance of about 9,400 miles (16,000 kilometers), and astronomers said they could confirm its existence in the new study.
The study, published Thursday (April 23), is the latest in a string of discoveries of planetary systems from the outer reaches of the solar system to those that lie beyond it.
A few years ago, scientists discovered two moons in the solar systems of Saturn and Neptune, but neither has been seen in a close orbit.
Pluto is one of only two known planets orbiting the sun that can be seen from Earth.
Its orbit is elliptical, so it orbits the star it orbits, the sun, not Earth.
It is about 1,000 times the size of Earth.
The other planet is Uranus, a gas giant.
Uranus is so large that its orbit is circular and its distance from the sun is less than 6,000 miles (10,000 km).
The planet is thought to be around 1,300 miles (1,500 km) across.
Pluto, like Uranus and Neptune and its moons, is a gas planet.
The gas giant planet also has an atmosphere, which is dense enough to hold water vapor and ammonia and oxygen.
The scientists who made the new find were led by David Pimentel, a planetary scientist at the Johns Hopkins University Applied Physics Laboratory in Laurel, Md.
The findings were published online today in the journal Nature.
“The first time we have seen a planet like Pluto, it was in the early 1990s when astronomers first found Pluto in its own system, which was a disk of gas and dust,” said Pimentet.
“And we have discovered Pluto in a disk in a different way, because Pluto was just discovered by another team, so we were able to see it in a whole new light.
We had the opportunity to see the disk in the outer solar system before, but we did not have a chance to see a planet in its native system.”
Pluto’s size makes it a target for future exploration, said study lead author Alexei Ilic, a graduate student at the University of Cambridge.
Pluto’s name means “fire of the gods.”
It is a member of the Kuiper Belt, a vast region of the outer Solar System where icy planets orbit their star and form planets and moons.
The Kuipert Belt, which includes Pluto, is thought mainly to be composed of rocky planets and a few icy moons.
It contains icy bodies like Pluto and is also believed to contain gas giants like Saturn and Uranus.
It also contains Jupiter, which has an orbit that is closer to the sun than Pluto’s.
The researchers say the newly discovered planet is a small, gas-rich world, about 100 times smaller than Neptune and just a tenth of the size as Earth.
Pluto was discovered in 2003 by NASA’s New Horizons spacecraft, which traveled to Pluto in 2015.
It took more than a year for the New Horizons team to learn about Pluto and learn more about the Kuzper Belt.
The New Horizons mission is expected to return its closest approach to Pluto and its mission is scheduled to end in 2019.
Pluto has been a source of great excitement for scientists because of its large size, because its mass, because of the unusual gravity it exerts, and because it is so far from its parent star, which lies about 3 billion miles (5 billion km) from the Sun.
Pluto orbits its parent planet, a binary star system called Nix.
The system contains a large number of stars in different colors.
A binary system has a star that is a twin to one of the other stars.
For the first time, scientists have found evidence of a binary system in the KZ system.
The results of the new work confirm the existence of two planets orbiting a binary, and that Pluto is in the first stage of a planetary system.
It has an innermost atmosphere of nitrogen and methane, which are gases with the same chemical composition as water and oxygen, but they are also different from water and helium.
The planets in the binary system are similar in size and mass to Pluto, and there are no other planets in it.
“We have a new tool in our toolbox,” said study co-author Daniel D. Johnson, a researcher at the Southwest Research Institute in San Antonio.
“If we can confirm Pluto in our own system in more detail, that’s a big step.”