Space-Time Astrophysics General Relativity Space-Time Questions Does gravitational lensing cause the speed of light to change? Why is time on earth and time in space different? Will time travel become possible with a great understanding of how time works in space? Do astronauts age while traveling in space? How does time in space relate to time on earth? Does travel at relativistic speed slow proton decay? Does special relativity affect biological processes, such as aging? When a mass moves very fast where does it pick up its extra mass? What is Quantum Mechanics and how is it related to time travel? What is the string theory? How is it related to space time? How is space time measured? Is it possible to "move" space, rather than a space vehicle, to make the vehicle travel faster? Question #8e239 Can a wormhole be used for fast interstellar travel? What is time? Question #6dc1f Question #3e0e7 General Relativity View all chapters Gravity Waves Black Holes Relativistic Orbits Space-Time Prev