SARATOGA SPRINGS, N.Y. — America might not need yet another exercise machine. Treadmills, weights and resistance equipment already jam the health clubs. Yet Gravity machines have found a niche at the ...

China has quietly switched on a machine that can subject objects to gravity up to 1,900 times stronger than what we feel at Earth’s surface, compressing decades of wear, stress, and catastrophe into a ...

SARATOGA SPRINGS, N.Y. — America might not need yet another exercise machine. Treadmills, weights and resistance equipment already jam the health clubs. Yet Gravity machines have found a niche at some ...

In a cavernous lab in eastern China, a metal giant is quietly rewriting the rules of gravity. The country has brought online a hypergravity centrifuge so powerful it can crush test materials with ...