Any uncertainty in the calculation of the object’s orbit causes variations in the predicted solution. Instead of one precise ...

Kijek/Adamski's "Slow Light" introduces a man whose eyeballs are so dense that it takes seven years for light to pass through them.

What is time? It’s something we all experience, yet it remains one of the most puzzling concepts in physics. Time is often ...

Time, as we experience it on Earth, may not be as constant as we imagine. According to Einstein’s theory of general relativity, time is not uniform across the universe; it’s actually affected by both ...

Physicists are rethinking time itself. Long treated as a basic part of the universe, time may instead be an illusion—a side ...

Earth is spinning faster this summer, making the days marginally shorter and attracting the attention of scientists and ...

See which players landed on our list of the most NFL passing touchdowns all-time.