How did Hubble prove other galaxies?
Hubble not only found a number of stars in Andromeda, he found Cepheid variable stars. That’s more than eight times the distance to the farthest stars in the Milky Way. This conclusively proved that the nebulae are separate star systems and that our galaxy is not the universe.
How did we find out about other galaxies?
Hubble used the P-L relation to find the distance to the Cepheid he was studying in M31, and proved that it was located outside of our own Galaxy. This finally ended the debate on the nature of the spiral nebulae – they were indeed distant galaxies like our Milky Way.
Who proved galaxies exist?
astronomer Edwin Hubble
How did Edwin Hubble establish that there are other galaxies quite removed from the Milky Way galaxy?
One of the most important observations in the history of astronomy was the one made by Edwin Hubble (about 1920) that established that there are other galaxies, quite removed from the Milky Way. By observing a supernova explosion in a nearby galaxy, using it as a “standard candle.”
Which galaxy is moving away from Earth?
The galaxies are moving away from Earth because the fabric of space itself is expanding. While galaxies themselves are on the move — the Andromeda Galaxy and the Milky Way, for example, are on a collision course — there is an overall phenomenon of redshift happening as the universe gets bigger.
Can galaxies travel faster than light?
The distance between these galaxies are growing at the speed of light but relative to their little local bit of space, they’re not even moving. Hence, it would be more accurate to say that though objects cannot move through space faster than light, but space itself can move faster than light.
Is the Milky Way moving away from other galaxies?
When one looks over smaller distances, though, galaxies can mutually attract each other due to gravity, thus are in fact moving toward each other. Our Milky Way and the nearby Andromeda Galaxy are two examples of such a pair of galaxies that are moving toward each other due to gravity.
Will humans ever travel to another galaxy?
The technology required to travel between galaxies is far beyond humanity’s present capabilities, and currently only the subject of speculation, hypothesis, and science fiction. However, theoretically speaking, there is nothing to conclusively indicate that intergalactic travel is impossible.
Will the Milky Way collide with Andromeda?
Previous simulations have suggested that Andromeda and the Milky Way are scheduled for a head-on collision in about 4 billion to 5 billion years. But the new study estimates that the two star groups will swoop closely past each other about 4.3 billion years from now and then fully merge about 6 billion years later.
What happens when Andromeda and Milky Way collide?
What will happen when Andromeda and the Milky Way collide? The result of the collision between Andromeda and the Milky Way will be a new, larger galaxy, but rather than being a spiral like its forebears, this new system ends up as a giant elliptical.
Can you see Andromeda galaxy from Earth?
At 2.5 million light-years from Earth, the Andromeda Galaxy is the most distant object visible with the naked eye. It’s the closest major galaxy to the Milky Way, and can only be seen if you have a really dark sky. However, the good news is that it’s visible all year round from the UK.
Is Andromeda galaxy visible from India?
Answer: Yes, you can see a few other galaxies without using a telescope! The nearby Andromeda Galaxy, also called M31, is bright enough to be seen by the naked eye on dark, moonless nights. The Andromeda Galaxy is the only other (besides the Milky Way) spiral galaxy we can see with the naked eye.
Can the human eye see the Milky Way?
More than 100,000 light years in diameter, with more than 100 billion stars and at least as many planets, the Milky Way is arguably the most impressive feature of the night sky that you can see with the naked eye. Then you’ll need a clear night sky with little to no fog or humidity.