What does Hubble’s Law imply about the universe?
Hubble’s law, which says simply that a galaxy’s velocity (or as is sometimes plotted, its redshift) is directly proportional to its distance, also tells us something important about the state of the universe. If the universe is static and unchanging, there should be no correlation between distance and velocity.
What does the Hubble law imply about the history of the universe Group of answer choices?
What does Hubble’s law imply about the history of the universe? The universe had a beginning and has expanded since, giving it a finite age. … Astronomers know the universe is expanding because: galaxies farther away are moving away from us faster.
What did Edwin Hubble confirm about the universe?
Hubble’s brilliant observation was that the red shift of galaxies was directly proportional to the distance of the galaxy from earth. That meant that things farther away from Earth were moving away faster. In other words, the universe must be expanding. He announced his finding in 1929.
What is Hubble’s theory of the universe?
The theory used to determine these very great distances in the universe is based on the discovery by Edwin Hubble that the universe is expanding. … So essentially, the Hubble constant reflects the rate at which the universe is expanding.
What kind of universe do we live in?
We live on a planet called Earth that is part of our solar system. But where is our solar system? It’s a small part of the Milky Way Galaxy. A galaxy is a huge collection of gas, dust, and billions of stars and their solar systems.
How old is our universe?
13.7 billion years
What is outside the universe?
Encountering the Unknown
Despite its strangeness, this first idea is one of the easiest to digest. Astronomers think space outside of the observable universe might be an infinite expanse of what we see in the cosmos around us, distributed pretty much the same as it is in the observable universe.
Why is Hubble’s law so important?
Because the exact value of the Hubble constant, H, is so important in extragalactic astronomy and cosmology – it leads to an estimate of the age of the universe, helps test theories of Dark Matter and Dark Energy, and much more – a great deal of effort has gone into working it out. …
How hot was the universe?
9 K.”>1 billion degrees, 109 K.
Can 2 galaxies collide?
When two galaxies of the same size are merging, many new stars form, making the merging galaxies brighter. … The Milky Way galaxy and the Andromeda galaxy are moving towards each other on a collision course. It will take millions of years for both to collide.
Who discovered the moon?
Why was Hubble’s age of the universe wrong?
This age estimate for the universe, Hubble acknowledged, was clearly less than the age of the Earth, as determined by geologists who measured the radioactivity in rocks. … Walter Baade made the crucial observation that doubled the distance scale and thus resolved the problem that the universe seemed too young.
What is Hubble’s law formula?
Hubble’s Law – One of the most important formulas of the 20th century. … Formula: v = Ho d where: v = velocity of a galaxy, in km/s. Ho = Hubble Constant, measured in km/s/Mpc.
Is the Milky Way expanding or contracting?
The Milky Way, the galaxy which contains our own solar system, is expanding and will eventually grow into its neighbour, Andromeda. Already 100,000 light years in diameter, new research puts its rate of growth at about 500 metres per second.