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Anonymous users2024-02-11Astronomy says that it can see stars billions of light-years away, and his claim is based on the theory of star redshift, that is, when analyzing the spectrum of stars, it is found that the spectrum of most stars is slightly shifted in the infrared direction.
Modern science believes that this type of redshift can be explained by the Doppler theory, that is, the redshift is caused by the departure of the star towards us, from which a cosmic Changshu is deduced, that is, the size of the redshift reflects the distance of the star from us, and from this hypothesis, it is deduced that the farthest star is tens of billions of light-years away from us. This statement is based on a series of inferences, there are many phenomena that contradict these theories, such as the mystery of quasars, some stars have both red shift and purple shift, etc., and even the universe Changshu is also the same for a few years, whether the extragalactic is tens of billions of light-years away from us, we can only say that according to the theory that it should be tens of billions of light-years away from us, there is no scientist who can tell you for sure that a word is true!
You may be fooled by scientists when you ask this question! Hehe.
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Anonymous users2024-02-10A: The image is transmitted to our telescope through billions of light-years.
That is, what we see is the universe of the past.
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Anonymous users2024-02-09Note: Light-years are the unit of distance! Indicates the distance traveled by light in a year.
Today's astronomical telescopes can already see billions of years ago"It means that the light from that side passes through billions of years to reach us
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Anonymous users2024-02-08Hehe, the landlord didn't learn physics well.
Just ask the question, can your eyes glow?
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Anonymous users2024-02-07Summary. Dear dear, it's a pleasure to answer your <>
Astronomical meaning: The word astronomy is a compound of the ancient Greek words "astron" (star) and "nomos" (law, regulation), which literally means "the law of the stars" or "astrology".
Ask, what is the meaning of astronomy.
Dear dear, it's a pleasure to answer your <>
Astronomical Meaning: The word astronomy is a compound of the words "astron" (star) and "nomos" (law, regulation) in the ancient Greek script, and its literal meaning is "the law of the stars" or "astrology".
<>Related Extensions: Astronomy is the study of celestial bodies and their motion, their laws, nature, and evolution. It deals with various celestial bodies including stars, planets, moons, comets, stars, etc., as well as their physical characteristics of the elderly, as well as the discipline that describes their movement and distribution in the universe.
Flowers for Hecha] <>
Astronomy is the study of the universe and the objects in it, from the Earth to the solar system and even to other parts of the universe. The research of astronomy mainly focuses on kinematics, precision, mechanics, photometry, and the evolution of star imitation and ascending systems.
Are you a philosopher?
I'm talking about the meaning and meaning of the heavenly and textual texts.
Dear, the heavens and the text alone have no meaning.
What does the word "day" mean? Text, what does this mean?
Pro, the meaning of a single word is different in different contexts.
1. The sky in nature: refers to the atmosphere and natural phenomena such as clouds, stars, and moons. For example:
Blue sky, sunny day, sky, etc. 2. The unit of calculation time: refers to one day, which is the basic unit of 24 hours of spring time and air resistance.
For example: one day, three days, seven days, etc. 3. Moral norms:
It refers to the gods that people believe in or the supreme existence that surpasses human beings. For example: God, Heavenly Dao, Mandate of Heaven, etc.
4. Quantifier: a unit that indicates a number of quantities. For example:
One day, two days, three days, etc. <>
<>Heaven" is also used in many idioms, poems, and famous sayings, such as "the world is peaceful", "heaven and earth", "innocent" and so on. These usages are all given a specific meaning and symbolic meaning to "heaven" in a specific context.
If the seven planets were to line up in 2012, it would be clear that the planets should be in the same or opposite constellations when observed on Earth. >>>More
I don't know what you mean, huh? You can do the math for yourself, and I'll show you how. First of all, you know the length of an elephant, then you know the distance between the moon and the ground, and then you can find out what the angle of the elephant is on the ground to observe him. >>>More
**Proportional to the square of the aperture (i.e., the area of the primary mirror). If you have money, you can see details such as the spiral arm of the extragalactic galaxy with an aperture of more than 200mm, and a spot of light below 200mm. The same is true for nebulae, the stars are one point anyway, even with Hubble, but large aperture can distinguish more binary stars, polyconjunctions. >>>More
It is difficult to find a perfect job that meets your own mind, there are always all kinds of problems, there are always all kinds of places that do not meet your own ideas, even if you find a job, you feel satisfied, but after a period of time there will always be places where you are not satisfied, so what you have to do is to precipitate yourself, accept problems, improve your ability, is gold will always shine, the work itself is to exercise yourself, enrich your ability to deal with problems, as you said, the leader shakes his hand, So isn't this just a way to exercise your ability to solve problems independently, as for the later probationary period was dismissed, indicating that the relationship with the leader is not in place, next time we should pay attention to the efforts to have a good relationship with the leader, and deal with the interpersonal relationship between colleagues, this is also a way to exercise yourself, after a job, a period of exercise, your ability will improve a lot, it is better than you in a company that you feel meets your requirements in all aspects, even if it is not stagnant, then the progress will be much slower, There must be disadvantages in everything, see a little open, accept the unsatisfactory, face it calmly, and improve yourself for the purpose.
Friend, after reading the ** you sent, I can tell you that the effect of these pictures is not reached, and it is not enough to see only a small bright spot, but it is almost, you can still vaguely see that there are two small edges and corners next to the stars, which is a graphic halo, but it is impossible to distinguish that it is a ring, such a telescope can only be used for sightseeing, at most you can see the lunar crater, if your main purpose is astronomical observation, such a telescope you will regret when you buy it! Break a leg!