For instance, Neptune migrated outward, switching places with Uranus, and pushed a lot of the small, icy bodies into the ...

The TNO, which are described as minor planets that orbit the sun at a greater distance than Neptune, were found on the edge ...

Astronomers announced the discovery of a new dwarf planet, provisionally named 2017 OF201, located in the remote outskirts of ...

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The object’s aphelion the farthest point on the orbit from the Sun is more than 1,600 times that of the Earth’s orbit,” said ...

The object is about 700 kilometres wide and lies nearly three times farther from Earth than Neptune. Its highly elongated ...

It's an evocative idea that has long bedevilled scientists: a huge and mysterious planet is lurking in the darkness at the ...

Even within our own solar system, distances are enormous. NASA astrophysicist Dr. Amber Straughn explains that driving a car ...

The universe's vastness challenges human comprehension. It contains trillions of galaxies and countless stars. Pluto's ...

Even in our own solar system, distances seem infinite. Think of driving continuously at highway speed to Pluto. It would take ...

We see at most 3% of the universe,” said Pamela Gay of the Planetary Science Institute, citing a mind-boggling constraint ...

The International Astronomical Union’s Minor Planet Center, which catalogs new moons and other small bodies in the solar ...