Are there new planets in our Solar System?

Arun Rath hosts the local broadcast of GBH’s All Things Considered. We get a lot of exciting science news about new exoplanets routinely discovered by powerful space telescopes — the planets that orbit stars other than our own Sun. But you might be surprised to know that the search for a new planets in our own solar system is ongoing.

Does the Solar System have a new ninth planet?

The solar system appears to have a new ninth planet. Today, two scientists announced evidence that a body nearly the size of Neptune—but as yet unseen—orbits the sun every 15,000 years. During the solar system's infancy 4.5 billion years ago, they say, the giant planet was knocked out of the planet-forming region near the sun.

Could there be a 'Planet 9' beyond Pluto?

NASA Takes a Look NASA's Director of Planetary Science, Jim Green, discusses the Jan. 20 Astronomical Journal science paper that points to the possibility of a new "Planet 9" in our solar system beyond Pluto, examining the scientific process and inviting you to have a front row seat to our exploration of the solar system.

Could a new Earth-like planet be circling the Sun?

Scientists may have found evidence of a new Earth-like planet. The team behind the research say the planet may be circling the Sun in an orbit past Neptune.

Could VRO find a new planet?

Existing telescopes are highly unlikely to spot such a distant world—but VRO should find Planet Nine, if it exists. “Imagine if, two years from now, we could say that there’s a new planet in the solar system,” says Bernardinelli.

Is planet Nine a dwarf planet?

Unlike the class of smaller objects now known as dwarf planets, Planet Nine gravitationally dominates its neighborhood of the solar system. In fact, it dominates a region larger than any of the other known planets—a fact that Brown says makes it “the most planet-y of the planets in the whole solar system.”