Hubble Space Telescope imagery Neptune has revealed that the planet's clouds are disappearing. Credit: NASA Goddard Space ...

For the unversed, "Planet Nine" is a hypothetical planet which is reportedly larger than Earth that is thought to orbit ...

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

As it orbits the sun once every 25,000 years, the celestial body 2017 OF201 travels beyond the Kuiper Belt into a region ...

But new research from the University of Chicago is urging caution. After analyzing data from multiple observations of the ...

Scientists have long puzzled over a discrepancy in how fast the universe is expanding, but new, sharper data from the James ...

U.S. astronomers hunting for "Planet Nine" have instead stumbled on what appears to be a new dwarf planet in the solar system ...

Information about Uranus is limited. What we know is that the planet is composed mainly of water and ammonia ice, its ...

Neptune, the farthest planet from the Sun at 1.9 billion miles, cannot be seen without optical aid, and even then, only if ...

Some astronomers say the strange, clustered orbits of icy rocks beyond Neptune indicate that something big is out there, ...