For over a century, astronomers have wondered if there's an extra planet in our Solar System that we haven't been able to see ...

Reference Explore the eight (or nine) planets of the solar system in order from nearest to the sun and discover the many wonders of our solar system along the way. An object seen to have moved in the ...

Scientists have unveiled an enormous gas cloud just 300 light-years from the solar system that measures about full 40 moons ...

As detailed in a paper to be published in the journal Nature Astronomy, the international team of researchers spotted the ...