Download The Superstructure of the Universe

The Superstructure of the Universe
1. The Universe is about ____ billion years old. The scientific ________________ that
best explains the birth and evolution of the Universe is the ________________ Theory.
2. Evidence for the Big Bang includes a predicted ___ degree Kelvin echo that was
discovered ____________ in 1965. The picture resolved from the echo perfectly
_____________ todays structure of galaxies. Edwin __________________ discovered
that the galaxies within the Universe are _____________ outward at a rate consistent
with the Big Bang.
3. The observable Universe is about ____ light years in diameter. We can’t see much
past that distance since light has not yet ________________ that distance. The
observable Universe is only ___% of known matter in the Universe. Dark __________ is
known by the way it ________ light in space and causes stars and galaxies to
__________ faster than they otherwise should.
4. The Universe is full of dark __________ that is causing the Universe to __________
up at its edges. It is believed today that the Universe will likely expand
_______________, cool, and grow _________.
5. The Big Bang predicts the type and distribution of _____________ we observe. ___
and ____ make up about ___% of observable matter and were the first elements to be
created. Shortly afterwards as ____________ were captured by the first atoms
___________ first illuminated the Universe . The first stars formed from H and He were
massive, soon clustered together and formed ________________ about ______ million
years later. These supergiant stars went ___________________ and began forming the
heavier _____________.
6. Major Galaxies have a basic structure of spiral_____ with a central ____________.
Stars tend to group together in ______ and ________________ clusters. At least half the
stars in the sky are ______________. The average star that can be seen in Earth’s night
sky is ____________ light years away. Galaxies tend to group together in
______________________. The _____________ cluster is our local galaxy group of
which the Milky _______ is a member. We are about 26,000 light years out from the
________ of the Milky Way which is about 100,000 light _______ in diameter and
contains between 100-300 __________ stars.
7. The Andromeda __________ is our nearest neighbor at about 2.5 light years away and
can be seen with the naked ______, although the Large and Small Magellan _________
and a dozen other _____________ spheroidal galaxies are nearer to us (several hundred
thousand light years).
8. The center of the Universe is _________________!
9. Explain why the center of the Universe is everywhere.