This page contains basic information and FAQs about the force we call gravity. Gravity plays an important role in our universe. Scientists still have a tough time understanding what this force is.This remains one of the greatest challenges of 21st Century science.
My book, Exploring Quantum Space also explains some of the exciting, and mysterious, aspects of the nature of gravity.
Ten Amazing Things about Gravity!
- It travels at the speed of light
- It is not a true force in nature
- It is the weakest ‘force’ in the universe
- It is only attractive and never repulsive
- It is produced by both matter and energy
- It only exists in 3-dimensional space
- It can warp the geometry of empty space
- It is the ultimate source of energy in the universe
- Space and time are created by it
- Its ultimate origin is completely unknown
My Blogs about Gravity and Space
- How do you visualize space?
- How do you think about ‘nothing’?
- What is space itself?
- What does the Planck Era tell us about the Nature of Space?
- What is Quantum Gravity all about?
- How does the brain think about space?
Since The Astronomy Cafe opened for business in 1995, its Ask The Astronomer resource has answered over 4000 questions about space and physics. Here are the most popular ones about gravity have generated more than 1 million views, which were also used by NASA’s Gravity Probe B mission!
- What exactly is a sub-atomic particles structure like?
- Do we really know how gravity and magnetism operate?
- Is the empty space inside particles the same kind as there is inside atoms?
- How does a magnetic field differ from a gravitational field?
- Can gravity be simulated using electromagnetic forces?
- Can gravity alter the speed of light?
- Can you go faster than the speed of light by altering space in some way?
- What are the ’10 dimensions’ that physicists are always talking about?
- Where does the energy come from that produces virtual particles?
- What does the equation look like that shows how gravitational radiation is lost from the binary pulsar system?