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How far away is earth from the Andromeda galaxy in kilometers in scientific notation?
The Great Galaxy in Andromeda (also known as the Andromeda Galaxy or M31) is about 2.5 million light years from Earth. When we look at this galaxy today, we see light that has been traveling through space for 2.5 million years; i.e. when we look at the Andromeda Galaxy, we are seeing it as it was about 2.5 million years ago! Think about this, we are looking back in time.1 light year is the distance that light travels in 1 year. Speed of light is 300,000 kilometers/second, find the distance that light travels from the Andromeda Galaxy to Earth in kilometers and express it in scientific notation.
How do scientists see what early galaxies looked like?
they see the past when they look up and see the galaxies. its looking back in time because light can take years to travel to earth and so its like their looking at the youth of the galaxy.
What determines the look back time of an object?
The look back time of an object is determined by how long it takes the light from that object, usually a star or galaxy, to reach an observer here on earth.
What 2 forces balance each other to keep of nebula dust and gas from collapsing or flying apart?
Gravitational force pulls the dust and gas inward, trying to collapse the nebula, while outward gas pressure from nuclear fusion reactions occurring in the core of the nebula pushes back, preventing the collapse. These two forces are in equilibrium, keeping the nebula stable.
Explain why objects that are farther away look younger to us than if they were closer to us?
light from any source takes time to reach us, it merely travels so fast that we percieve it as being instant because we tend to be very close to the sources of light we manipulate. when we see light from a galaxy 1000 light years away, we are seeing light that was emitted by that galaxy 1000 years ago, and if this galaxy suddenly disappeared, we wouldn't know about it for 1000 years, until the last of its light arrived and then no more. if you consider this in cosmic terms, were we to study a region of the universe 1 billion light years away, we would be looking at something 1 billion years old, a snapshot of what the universe looked like a billion years ago, a younger universe. probably helps to explain what younger means here: in space the universe is basically the same everywhere, stars in galaxies in clusters, but in time the composition has changed as chemical and nuclear reactions have altered the various quantities of different substances. so we see a galaxy a billion light years away, its composition will be of an earlier order than the composition of a nearer galaxy. As the universe expands galaxies move farther apart, the light more faint.
How far away is earth from the Andromeda galaxy in kilometers in scientific notation?
The Great Galaxy in Andromeda (also known as the Andromeda Galaxy or M31) is about 2.5 million light years from Earth. When we look at this galaxy today, we see light that has been traveling through space for 2.5 million years; i.e. when we look at the Andromeda Galaxy, we are seeing it as it was about 2.5 million years ago! Think about this, we are looking back in time.1 light year is the distance that light travels in 1 year. Speed of light is 300,000 kilometers/second, find the distance that light travels from the Andromeda Galaxy to Earth in kilometers and express it in scientific notation.
How do scientists see what early galaxies looked like?
they see the past when they look up and see the galaxies. its looking back in time because light can take years to travel to earth and so its like their looking at the youth of the galaxy.
Studying distant galaxies is described as looking back into the past What does this mean?
When we view an object in space, we are notobserving it "as is" we are observing it "as it was". What we are seeing, is the light that was emitted at that time.For example: A galaxy is 1,000,000 light years away. When we view it, we are seeing it as it was 1,000,000 years ago, because that is how long light has taken to get to us.The galaxy may well have been swallowed by a giant mutant turtle 999,998 years ago, but we will not know for another year.So we are seeing objects in space as that were, relative to their distances from us, not what they are. Eg looking back in time.
What is the nearest galaxy observable with the naked eye?
You can see the faint blur of Andromeda by looking near the back foot of Pegasus.
Why can you see using light?
The sensors in the back of your eyes detect light particles that bounce off the thing you're looking at.
What is the largest object in the milky way?
Probably the furthest "named" object would be Sagittarius A a supernova remnant at about 30,000 light years. The furthest object would be on the other side of the Galaxy at about 75,000 light years and could be a star, a nebula or just a grain of dust.
What is an arcminute?
An astronomical archminute consists of 2000 light years. One can define the size of a galaxy by light years or archminutes. the closest spiral galaxy to our own is known as the M31 galaxy in the constillation Andromeda (all facts can be backed up, just search M31 and Andromeda on simple google search to confirm).The M31 galaxy is 200,000 light years wide and 100,000 light years high. also known as 100 archminutes by 50 archminutes. of coarse all of these measurements go back to the simple base figure of the speed of light.1 light year = distance light travels in a year1 archminute = distance light travels in 2000 years
Can I get back my galaxy grand duos's stock recovery?
Yes, you can get back your Galaxy grand duo's stock recovery.
What determines the look back time of an object?
The look back time of an object is determined by how long it takes the light from that object, usually a star or galaxy, to reach an observer here on earth.
Why is looking in a telescope like looking back through time?
The light from our own sun takes roughly 8 minutes to travel the distance to us. That means when you look up at the sun (don't do that without special glasses) you are looking at the sun as it was 8 minutes earlier. Or you can say you are seeing the sun 8 minutes back in time. The stars which are far away galaxies, the light takes years to reach us. So the light we see at night now can be 100 years old. Or we are seeing that galaxy as it was 100s of years ago.
If you look far enough away can you see Earth in the past?
No. If you look far enough away, you will see OTHER objects in the past. For example, if a galaxy is ten million light-years away, the light of this galaxy took 10 million years to reach us, so we see this galaxy 10 million years ago. Earth's light, from millions of years ago, doesn't come back to us, since (roughly speaking) light travels in a straight line, and moves at the speed of light (300,000 km/sec).
Is a black hole black because light cannot escape it and when you look into space where looking at light back in time?
Yes your indeed correct
