What do astronomers do?

Science

One study of astrology was believed to have begun around the time of the...

The Ancient Mayans, who started Astronomy with detailed mapping of the stars and planets, lived in...

Who showed that the Earth and all the planets orbited the sun as we understand it today?

Who was a human computer that helped humans get into space?

Every part of space seemed to have some heat in it as if there was an explosion that happened a lot time ago and the heat was left over.

Galaxies seemed to be getting further and further away and therefore the universe must be expanding.

Scientists heard an extremely loud noise in our universe which led them to believe there was an explosion.

Which of these is NOT one of the discoveries that led to the creation of the Big Bang Theory?

... a galaxy exploded and created all other galaxies, thus forming the universe.

... all matter that ever existed began in a single point that suddenly exploded outwards.

... our universe is expanding because there will be an explosion in the future.