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How do astronomers locate other stars trillion light years away?
Wiki User
∙ 8y ago
They can't. The universe is only about 13 billion years old. If there are galaxies a trillion light years away their light has not reached us yet and due to the expansion of the universe, never will. At the edge of what we call the observable universe we cannot make out individual stars, but we can detect galaxies using infrared telescopes.
Wiki User
∙ 8y ago
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How long in years would take to travel 57 trillion km in light years?
Light years is not a time, it is a distance. It takes light about 6.025 years to travel 57 trillion km. In other words, 57 trillion km = 6.025 light years.
One parsec is equivalent to how many trillion miles?
No. The distance light travels in a year is called a light-year. A parsec is the distance at which a star (or other object) would have a yearly parallax of 1 arc-second, and it is equal to about 3.26 light-years.
Why do we need to use light years as a way of measuring cosmic distances?
A light year is a much greater distance than almost any other unit in use. It is equivalent to about 9 trillion kilometers or 6 trillion miles. With a unit such as a light year we can discuss the vast distances of space without having to resort to absurdly large numbers.
What are Venus astronomers?
What do Astronomers do? In general, astronomers seek an understanding of how the Universe works; from the planets in our own Solar System, to the evolution of stars and nebulae, to whole systems of galaxies, to the properties and fate of the Universe as a whole. Modern astronomy is an interdisciplinary science that relies upon, and furthers the development of, fields such as physics, chemistry, computer science, and mathematics. Only the very nearest astronomical objects (all within our Solar System) can be reached by spacecraft in a reasonable amount of time. Information about all other objects comes indirectly from earthbound telescopes or earth-orbiting satellites, which observe light emitted or reflected from such objects. The collection and detailed analysis of this light is key to unlocking the mysteries of the observable Universe. The sole purpose of a telescope is to collect this light; it is the role of the astronomer to analyze and interpret this data.
What is the difference in time and light years?
Time is a physical characteristic. A light year is a measure of distance, not of time. It is the distance that would be travelled in vacuum by light or other electromagnetic radiation. The distance travelled in outer space is nearly the same and is equal to approx 9.46 trillion kilometres.
How long in years would take to travel 57 trillion km in light years?
Light years is not a time, it is a distance. It takes light about 6.025 years to travel 57 trillion km. In other words, 57 trillion km = 6.025 light years.
How far is earth from proxima centauri but not in light years?
In units other than light years, the distance to Proxima Centauri is approximately:1.30 parsecs269,000 astronomical units40 trillion kilometers25 trillion miles
Is there any other astronomers that are also scientists?
All astronomers are scientists.All astronomers are scientists.All astronomers are scientists.All astronomers are scientists.
One parsec is equivalent to how many trillion miles?
No. The distance light travels in a year is called a light-year. A parsec is the distance at which a star (or other object) would have a yearly parallax of 1 arc-second, and it is equal to about 3.26 light-years.
Why do we need to use light years as a way of measuring cosmic distances?
A light year is a much greater distance than almost any other unit in use. It is equivalent to about 9 trillion kilometers or 6 trillion miles. With a unit such as a light year we can discuss the vast distances of space without having to resort to absurdly large numbers.
How many times larger a trillion then a million?
In English-speaking countries, a trillion is usually a million millions. In many other countries, a trillion is a million times a million times a million.In English-speaking countries, a trillion is usually a million millions. In many other countries, a trillion is a million times a million times a million.In English-speaking countries, a trillion is usually a million millions. In many other countries, a trillion is a million times a million times a million.In English-speaking countries, a trillion is usually a million millions. In many other countries, a trillion is a million times a million times a million.
What is the unit that astronomers most often use to express the wavelength of light is called?
For visible light, the nanometer (nm) is usually used. For other wavelengths of EM waves, other prefixes can be used with the meter; for example meter, kilometer, millimeter, femtometer, etc.
Can you see things without oxygen?
Light waves require no medium (unlike sound waves that require a medium such as air) and therefore sight is independent of anything other than light. For example there is no oxygen in space but astronomers can still observe light from a star light years away.
Why is light from the sun able to reach Earth more quickly than light from other stars?
Because it is closer. The Sun is about 93,000 miles from us, whereas the nearest star is about 24.5 trillion miles from us.
How many lightyears is the closest sun other than the sun?
The closest star to the Earth, other than our own Sun, is the red dwarf star Proxima Centauri. It is about 4.22 light years away from us.The second closest star to the Earth (apart from the Sun) is Barnard's Star, a red dwarf. It is about 5.96 light years (about 35.0 trillion miles or 56.3 trillion kilometers) away.
What type of scientist studies the Solar System stars and galaxies?
Collectively they are called Astronomers and Astrophysicists. Either professionals or amateurs.There are many types of astronomers, defined by how they study the stars. The most well-known are those that use optical telescopes followed closely by those that use Radio-telescope to pick up wavelengths other than visible light. there are many others and many other ways to collect data on the galaxies and stars.Astrophysicists are astronomers and may also collect direct data, yet they are more interested in the working behind the data. They deal in physics and theories of the galaxies.
How many zeros are in ten million trillion?
1000 billion dollars!!!!\ woah dog! ============================================================== Here are some other perspectives on 1 trillion dollars: Consider that light travels at about 186,000 miles per second. This time is called a light-second and is often used in astrophysical discussions. A light-second is also about 983,571,056 feet (that's how many feet are in 186,000 miles). This is almost 1 billion. Now, since a dollar bill is 6 inches long, there are almost 2 billion 1 dollar bills in a stretch that covers 186,000 miles - and it would take light 1 second to travel the length of 2 billion dollar bills. Now consider the distance from the earth to the sun - average is about 93,000,000 miles. Converting this to feet, and accounting that it takes 2 dollar bills to make a foot, we find that it takes 982,080,000,000 dollar bills to go from here to the sun - end-to-end. This is almost (within 1.8%) 1 trillion dollars. If we actually stretched the 1 trillion dollars from here to the sun, it would take light 8 minutes and 20 seconds to go from one end to the other. That's what a trillion dollars is.
