The way that astronomers learn what elements are present in a given star is by analyzing the light from the star. Different elements have different spectral signatures, and by comparing the light from the stars to the known signatures of the elements, scientists are able to determine which ones are present in the stars.
We identify different elements in stars using spectrography. This is when we analyse the light waves emitted by different elements. Every element in the universe has a "fingerprint" in the absorption spectra they produce and since we can study the different elements on earth, we can then turn our spectrograph to a star and see the different absorption spectra of its component chemicals, which we then compare with known samples to identify the type of element.
The atomic emission spectrum of an element is different from any other element. That is just a characteristic of the elements. The wavelengths of the spectral lines are simply different for each element. I apologize if this answer is not what you wanted but I hope that help!
If you go outside at night and give the stars more than just a quick glance ...
give them two glances, let's say, 15 minutes apart ... you'll see clearly see that
everything in the sky is moving.
The reason is exactly the same as the reason the Sun rises on one side of
the sky, crosses over, and sets on the opposite side. It's simple: The Earth is
spinning ... one complete spin roughly every 24 hours ... and everybody and
everything on the Earth rides along with the spin. When we look at something
that's far away and not on the Earth, the spin keeps turning our eyes and our
telescopes in different directions. If we want to keep watching the same object,
we have to keep turning our eyes and our telescopes in order to stay planted
on it.
That's why you look in different directions to see the Sun as the day goes
on, and that's why you point your telescope in different directions to watch any
single star as the night goes on.
The curved glass lens (or mirror) in a telescope collects the light from a larger area than your eye can, and concentrates it in a viewing area (the eyepiece) that is free from other brighter lights.
It is like having bigger eyes... The bigger a telescope's main lens, or main mirror, the bigger will be (a) its light-gathering capacity, and (b) its resolution. For simplicity, just consider our eyes as a "small telescope", and compare the size.
they identify the elements using absorption spectra. Atoms become electrically charged and the electrons jump up several energy rings. They want to go back to their natural state (original rings) so they drop back down. But where does the energy go? It is released in the form of photons, and leaves the atom. This is seen as plain old white light-not very helpful. But, these can be broken up with a prism, and there is a rainbow (just like with any time light is broken up) except there are bars missing. Each element has certain bars missing when light emitted by the charged gas is broken up by a prism. Thus, scientists break up the light emitted by a star and see which bars are missing and also how bright the rest is. This shows not only what elements are present, but also what percentage of each element the star consists of.
You use spectroscopy. Astronomers use a spectroscope to look at a star and record its spectra pattern, they then compare it to the spectra emitted by known substances, if all of the dark lines of one element and of the star match up, then that star contains that element on its atmosphere.
Because it actually IS a double or multiple star. Also, because the telescope has a better resolution than the human eye - it is capable of distinguishing, as separate points of light, things that are closer together.
telescopes help astronomers by finding new objects in space we have never discovered
he builds her a better telescope so she can see the stars and planets(jupiter)
its the telescope with suitable configuration of power.
Yes, the Earth is in the Milky Way. Every star you can see in the sky at night is also in the Milky Way. With the naked eye, you cannot see any stars that are not in the Milky Way. The next nearest galaxy is Andromeda and it is just about visible with the naked eye, looking like a hazy dust in the sky, but you would not see any stars in it. It is the furthest thing away that we can see with the naked eye. It is hard to be accurate but it is about 2,500,000 light years away. That is about 14,674,284,000,000,000,000 miles away. To see stars in it, you'd need a very powerful telescope.
The origin of the word "telescope" is ORIGIN mid 17th cent.: from Italian telescopio or modern Latin telescopium, from tele- 'at a distance' + -scopium (see -scope ).
They see the Northern and Southern constellation stars respectiively.
Yes. If you use a telescope you can see them better.
A telescope will magnify stars so you can see them better.
a telescope because if you never heard of the Hubble telescope that is like the international telescope.
a telescope
a telescope
Through a telescope or with the naked eye.
telescope
He built the first reflection telescope! He built the first reflection telescope!
your eyes
you can see heavenly bodies with the help of a telescope
A looked through my telescope that day, to see the moon,stars and you, my dear.
Definitely, a 500-mm (20-inch) telescope is a large instrument because 500 mm is the diameter of the main mirror or lens, so the telescope would be 3-5 metres long. A telescope this size could see faint stars down to a magnitude of round about 15. Remember that you don't need any telescope at all to see stars. On a clear night in a dark place, you can see a few thousand of them with only your eyes.