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What is galaxy redshifted?
Galaxy redshift is much light the Doppler effect. If a galaxy is traveling away from us, the light that it emits and is seen by us is stretched out (the faster we are separating, the stronger the redshift), that means that the wavelegnth is stretched a bit, shifting the light towards red.
Why is a light year a unit of distance rather than time?
A light year is a distance measurement because it would take something a year travelling at the speed of light to cross. It is called a light year because it helps astrologers/scientists understand the vastness of the distance between two things; for example, Our Galaxy (The Milky Way Galaxy) and our nearest Galaxy (Andromeda Galaxy)
How long would it take to cross the milkyway at an impossible speed of light?
About 100,000 years. (the diameter of the Milky Way galaxy is 100,000 light years)
Why is the light from Andromeda that reaches Earth 2.5 million years old?
The Andromeda galaxy is 2.5 million light years away, meaning that it takes 2.5 millions years to get here traveling at the speed of light.
How far away is Einstein's cross from Earth?
Einstein's cross is located about 8 billion light-years away from Earth. It is a gravitational lensing phenomenon where the light from a distant quasar is bent by the gravitational field of a foreground galaxy, creating multiple images of the quasar.
How many years would it take a spacecraft in travelling at the speed of light to cross your galaxy?
a long time
How long would it take to get to Andromeda galaxy?
Traveling at the speed of light, it would take approximately 2.5 million years to reach the Andromeda galaxy, which is about 2.5 million light-years away from Earth. With current technology, it would take tens of thousands of years to reach Andromeda using conventional spacecraft.
Can you cross Galaxy?
Our galaxy has a diameter of about 100,000 light-years; at the speed of light, that would take 100,000 years. Currently there is no technology that allows us to do this.
How long would it take for a spacecraft to travel to a star located 40 light-years away from Earth?
Traveling at the speed of light, it would take a spacecraft 40 years to reach a star located 40 light-years away from Earth.
How long does it take light to cross the diameter of your Milky Way Galaxy?
About 100,000 years
How long would it take to travel to another galaxy at the speed of light?
Traveling to another galaxy at the speed of light would take an incredibly long time. The closest galaxy to us, the Andromeda galaxy, is about 2.5 million light-years away. This means it would take 2.5 million years to reach Andromeda at the speed of light.
How large is the galaxy in which Star Wars is set and is it smaller than our galaxy?
i would have thought it was conciderably smaller because the space ships crosed it(at light speed) in minutes. if you tryed to cross our galaxy at light speed it would take billions of years.
What is galaxy redshifted?
Galaxy redshift is much light the Doppler effect. If a galaxy is traveling away from us, the light that it emits and is seen by us is stretched out (the faster we are separating, the stronger the redshift), that means that the wavelegnth is stretched a bit, shifting the light towards red.
Why is a light year a unit of distance rather than time?
A light year is a distance measurement because it would take something a year travelling at the speed of light to cross. It is called a light year because it helps astrologers/scientists understand the vastness of the distance between two things; for example, Our Galaxy (The Milky Way Galaxy) and our nearest Galaxy (Andromeda Galaxy)
How long would it take for a spacecraft to travel to a star located 40 lightyears away from Earth?
Traveling at the speed of light, it would take a spacecraft 40 years to reach a star located 40 lightyears away from Earth.
How long would it take to cross the milkyway at an impossible speed of light?
About 100,000 years. (the diameter of the Milky Way galaxy is 100,000 light years)
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.
