Gravity, one of the four fundamental forces of nature, appears reassuringly constant across the Universe, according to a decades-long study of a distant pulsar. This research helps to answer a long-standing question in cosmology: ...
Why is landing on a comet so difficult and what does this tell us about future missions to comets and asteroids?
Next time you tune in to public radio or the hottest Top 40 radio station, you'll be using some of the same tools NASA uses to unravel the mysteries of the universe.
Gravity is a constant for all organisms on Earth. It acts on every aspect of our physiology, behavior and development – no matter what you are, you evolved in an environment where gravity roots us firmly to the ground.
It's a staple of scifi, and a requirement if we're going to travel long-term in space. Will we ever develop artificial gravity?