The cosmic horizon of our sight
The shape and geometry of space
Is there an edge to everything
The expanding cosmos and cosmic speed limits
Three ultimate fates of the universe
YOUR GOAL
Master of Is the universe infinite
artiteacher Cosmic Expansion
We are stretching past the speed of light! (Yeah, we're flying!) / Chasing galaxies right out of sight! (Out of sight!)
artiteacher Distant regions of the universe are expanding away from us faster than light.
artiteacher Galaxies are not moving through space; rather, the fabric of space itself is expanding.
artiteacher Stretch the cosmic fabric to figure out how the expanding universe pushes galaxies apart.
Stretching waves: The expansion of space actually stretches light waves, transforming energetic gamma rays from the early universe into harmless microwaves today.
The speed at which electromagnetic radiation propagates in a vacuum. Although space expands faster, Albert Einstein's 1905 theory defined this constant as the universal speed limit.
Which scientific law relates a galaxy's distance to how fast it is moving away?
What is the name of the effect where light waves change frequency due to motion?
What prevents objects like Earth or our bodies from expanding along with space?