Astrum on MSN

New evidence could end the search for Planet 9

For years, astronomers have searched for Planet Nine, a hypothetical world thought to lurk far beyond Neptune. Its existence ...
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 ...