The celestial event will be a once-in-a-lifetime experience for many but the date has varied among internet users ...

Scientists break down the reasons why days are getting shorter—and the mystery they're still trying to solve about Earth's core.

Though invisible, dark matter has a strong pull on space. Its presence bends spacetime, changing the paths of light nearby.

As telescope tech advances and exoplanet counts soar past 7,000, scientists believe the evidence for alien life could emerge ...