Celestium on MSNOpinion

Astronomers say the evidence for Planet 9 is stronger than ever

For decades, astronomers have suspected that a massive, unseen planet may be shaping the strange orbits of distant objects ...
Veritasium on MSN

Why Planet 9 could be the biggest discovery in decades (if it’s real)

For years, astronomers have suspected there’s a massive unseen world hiding far beyond Neptune — Planet 9. This video breaks ...