According to the Big Bang theory, what happens if you reverse the galaxy motion and go back in time? Responses Everything would become condensed into one dense point Everything would become condensed into one dense point Some things would remain the same, while others go back Some things would remain the same, while others go back Everything would be the same as it is today Everything would be the same as it is today You would find everything in a large cloud of cold isolated gas
Everything would become condensed into one dense point. This is known as the singularity, which is believed to be the starting point of the universe according to the Big Bang theory. By reversing the galaxy motion and going back in time, everything would eventually converge into this singular point of extreme density and temperature.
In relation to us, galaxies are doing what?
Responses
Moving away from us
Moving away from us
Moving towards us
Moving towards us
Not moving
Not moving
The move towards us and away from us all the time
Moving away from us. This is a key observation that led to the development of the Big Bang theory. Astronomers have observed that galaxies are moving away from each other and from our own galaxy, the Milky Way. This expansion of the universe is one of the main pieces of evidence supporting the idea that the universe began with a Big Bang.
All of the following make up a galaxy except _____.
Responses
gas
gas
stars
stars
water
water
dust
Water. Galaxies primarily consist of gas, stars, and dust. Water is not a primary component of galaxies, although it can exist in molecular form in interstellar space within galaxies.
All of the following are shapes of galaxies, except _____.
Responses
irregular
irregular
circular
circular
spiral
spiral
elliptical