What makes something quantum? This question has kept a small but dedicated fraction of the world’s population – most of them ...

The controversy endures over Pluto's true status, but the solar system underdog continues to capture hearts across the globe.

Physicists have found a simple and effective way to skip over an energy level in a three-state system, potentially leading to ...

“New Horizons shattered a major paradigm of planetary science,” says Alan Stern, the mission’s principal investigator. “Pluto ...

Atomic clocks are more accurate than those used to define the second, suggesting the definition might need to change ...