Big Bang

There are 3 main questions about the Big Bang that are considered the holy grail of physics. What are they?

1. Why did it bang? 2. What banged? 3. What was there before it banged?

The universe is __________ billion years old.

13.7

Space is at least __________ billion light years across.

150

Before the universe became transparent, it was a milky soup of loose electrons. It took ___________ years for the electrons to form atoms in the early universe.

3 hundred and 80 thousand (380,000)

About ____________ billion years ago, gravity begins to draw in dust and gas to give birth to our sun and solar system.

5

What is the one thing that can destroy a universe before it even gets started?

Anti-matter

_____________ energy is pushing the galaxies apart and is killing the universe.

Dark

What equation shows that we can get matter out of energy in the universe?

E= mc²

Everything in the universe is made from matter created in the __________ of the Big Bang.

First seconds

For every billion particles of antimatter, there were ______________________________________ particles of matter. That was enough to build the universe.

a billion and one

Edwin Hubble discovered that galaxies are moving __________ from Earth at incredible __________. This is the first real evidence of the Big Bang.

and flying away; speeds

If gravity were weaker than it is, everything would fall apart and no galaxies could form. If gravity were stronger than it is, everything would end up in ______________________________.

black holes

Temperatures during the big bang were so hot that the atoms of your body would _______________.

disintegrate and rip apart

Immediately after the big bang, a shockwave of energy ________________ the universe in a fraction of a second (this is the "inflation")

erupted and expanded

Our universe is not slowing down, but is actually speeding up as it __________________.

expands

One billion years after the big bang, the first _________________ forms.

galaxy

The first force to emerge from the big bang was _______________.

gravity

As the temperatures of the universe cool, the particles begin bonding together to form atoms of elements. The first to form is _____________________, then ________________________ and lithium.

hydrogen; helium

Our big bang is just one of many big bangs in an __________ of universes.

infinite number

The beginning of everything was a single point of ______________ density and infinite ___________ in a region smaller than a single atom...a point of raging energy.

infinite; temperature

What might happen if our universe DOES collapse back on itself?

it might trigger another Big Bang

Antimatter has the __________________ charge from regular matter.

opposite (negative)

Early in the universe there were no atoms, but there were tiny, subatomic _________________.

particles

Everything that matters to us today could have arisen out of __________.

precisely nothing

At the beginning of the 20th century, the convention wisdom is that the universe is __________ and __________.

static ; eternal

14 billion years ago, the big bang created ________________ and space, our whole vast universe, and _____________________ in it.

time; everything

Galaxies that are twice as far away are moving __________ as fast. This became known as Hubble's Law.

twice