All matter moves through space-time at the universal constant— the speed of light— but this speed is shared between motion in space and the flow of time. Objects don’t speed up beyond light speed; ...

A trio of heliophysicists and satellite trackers at NASA Goddard Space Flight Center and the Goddard Planetary Heliophysics ...

There may be an infinite amount of energy locked in the vacuum of space-time. So could we ever harness this energy for ...

A highly reflective lightsail pushed by light energy in the same way sailboats are pushed by the wind could travel as fast as ...

Particles racing through space at nearly the speed of light pack energy millions of times greater than anything we can create on Earth. For decades, these cosmic bullets have puzzled scientists: where ...

The US space agency has discovered a mysterious object which is sending signals to Earth every 44 minutes. Located about ...