The bullying presence of a big, undiscovered "Planet Nine" isn't necessary to explain the strange orbits of a handful of objects in the outer reaches of the solar system, new research suggests. Last ...

A new salvo has been fired in the back-and-forth debate about the existence of Planet Nine. In 2014, astronomers Scott Sheppard and Chadwick Trujillo suggested that a giant unseen "perturber" may lurk ...

JWST has identified nine distant, compact galaxies that do not fit existing categories, raising new questions about how galaxies formed in the early Universe.

Astronomers hunting for Planet Nine have found some 50 new objects lying beyond the orbit of Neptune – including a few that may help them track down this elusive, distant world. The new discoveries, ...

Our Solar System may be the closest part of the Universe to us as we look beyond Earth, but there are still plenty of surprises here in our own backyard. It took thousands of years before we ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. The bullying presence of a big, undiscovered "Planet Nine" isn't necessary to explain the strange ...