4. Rogue Black Hole
Imagine a rogue black hole—an invisible monster roaming the galaxy—drifting into our solar system. Such an encounter could either swallow Earth entirely or gravitationally disrupt our planet’s orbit, flinging us into the cold void or toward the Sun. Astronomers are actively searching for these cosmic nomads using cutting-edge telescopes and gravitational lensing techniques, as discussed in studies like those found in NASA’s Hubble mission findings.