We’ve grown up with the idea that the universe will expand forever, meaning the "cosmological constant" is positive. What if it's negative?

In a recent study published in the Astrophysical Journalletters, scientists confirmed something both exhilarating and unsettling: the universe is expanding in a way that defies our most trusted models ...

Using the world’s largest digital camera, Rubin will capture a full view of the southern sky every three days.