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Posts published in “Astronomy”

Few Things You Didn’t Know About Lunar Eclipses

https://1drv.ms/w/s!AhIPQgZM_9WShf8K5dOlBR6uszCbTwLunar eclipse is a rare spectacle, which occurs in a specific time. Typically, you will see a lunar eclipse when the moon is passing behind the earth into its shadow or umbra. In that sense, it’s a much talked event and people are always curious about it. So, in this article, we are going to talk about the six things you didn’t know about lunar eclipse before. Let’s move forward and read the article in full.

  1. Lunar eclipse occur when there is a full moon: Since moon is the opposite of the sun, so when it’s in the opposite direction of the sun, the earth remains in between the moon and the sun, casting a shadow on the moon. Thus, lunar eclipse occur in the world. You won’t see lunar eclipse every month as the orbit of the moon is tilted five degrees more than the earth’s orbit.
  2. When the earth, sun, and moon align, we call it Syzygy: In the month of May 26, 2013, Jupiter, Venus and Mercury had aligned in the evening sky, creating a Syzygy. Usually, this term is used when three bodies are lined up in the space. The word – Syzygy is a Greek word, which refers to ‘yoked together.’ Greek people pronounced this word like –sizigee.
  3. You will see three types of lunar eclipse: There are three types of lunar eclipse – total, partial, and penumbral. When there is a total lunar eclipse, the entire moon will go through partial eclipses on either side of the totality. You will see a total eclipse if the shadow of the earth covers the moon fully. A partial eclipse will occur if the shadow of the earth covers only a portion of the moon. What’s more, the penumbral eclipse will occur if the earth’s lighter and outer shadow covers the moon. This type of eclipse often go unnoticed by the casual sky watchers.
  4. The total lunar eclipse darkens the moon: When there is a total lunar eclipse, not only it covers the entire moon, but also it darkens the moon as well.
  5. If you are on moon, you can see the lunar eclipse from there: You can see a lunar eclipse from the moon. Sounds interesting? Yes, it should be because when you are standing on the moon, we just see the earth is darkened as the sun is behind it.
  6. During a lunar eclipse, the moon will be dark because of the refraction: At the time of lunar eclipse, the moon turns into a rusty shade of red as the earth’s light is refracting. Therefore, the moon looks reddish and we call it a blood moon. This happens because the way of the light refraction in the earth’s atmosphere and it’s called Rayleigh scattering. Additionally, it is the same reason for the red color of the sunset and sunrise. Also, during the lunar eclipse, the actual color of the moon is related to the particles in the earth’s atmosphere.

Some Bonus Facts: Here are some bonus facts that we believe are significant about lunar eclipses.

  1. All lunar eclipse have time limits: Lunar eclipses don’t last forever. To be precise, a lunar eclipse doesn’t last longer than three hours and forty minutes (according to the National Maritime Museum in London). A totality or a total lunar eclipse would only last up to one hour and forty minutes. Even some lunar eclipses would be shorter than you think. The reason behind the time limits is due to the shape of the shadow of the earth. The earth is cone-shaped. Therefore, the time duration of the lunar eclipse depends on the time to get out of the earth’s shadow.
  2. Between several million and a few billion years, the lunar eclipses will be different: According to Space.com, the moving rate for the moon is 1.6 inches each year. It means the moon moves away from the earth at this speed. As a result, it will cause a massive change in how the earth’s shadow appears on the face of the moon.

Bottom Line

The bottom line is lunar eclipses are fantastic events, which we must enjoy to the fullest. So, we believe these above facts will increase your interests in lunar eclipses. Let us know what you think about the lunar eclipses by commenting below.

What Is the Smallest Thing You Can See?

What Is the Smallest Thing You Can SeeIf you look around and have a closer look at your surroundings, you will find the world is filled with many things like people, trees, birds, cars, and many more. If you watch the night sky, you will see stars, moons, and even the distant planets. Maybe these objects rest millions of miles away from you, but aren’t these things amazing for you? You can see them with your very own eyes.

However, what about the things that you can’t see with your eyes? Yes, we are talking about the intangible things. The things that we mentioned earlier are tangible but there is much more than what you can see through the eyes such as germs dust mites, bacteria and so on. These things are all around us and they are invisible to our naked eyes.

In terms of science, we called these things – ‘Microscopic Objects’ because they can’t be seen without microscopes or magnifying glass. In addition, our eyes have limitations as we are not able to see small objects without these devices. The term – ‘Magnification’ refers to making something big without changing its actual physical size. You will see that magnifying tools utilizes a special kind of lens for bending light at an angle, which will increase the size of the image that we will see through our eyes. As a result, you can see the tiniest of objects easily. The more the lens is increased, the better you can see the objects.

What Is the Smallest Thing You Can SeeAccording to experts, with our regular vision, we can see objects small as about 0.1 millimeters. And this is without the help of any tools. The smallest things you can see through your eyes are human hair and lice (both of these things can be seen with the naked eye and under a microscope).

However, if you use powerful microscopes, we can see things that incredibly small. Even these things that are not possible to see through the naked eye can be seen with microscopes. A microscope will help you see objects small as 0.001 mm or one micrometer. The ‘microsphere nanoscope,’ a recent invention will allow us to see things up to 20 times smaller. This device is a combination of a standard microscope and a complex device, known as the transparent microsphere. The experts believe this powerful tool will help them to see through human cells. Even they will be able to examine live viruses in a detailed manner.

In the future, more accurate tools and devices will be developed to see even smaller things. This is the belief of scientists because there is no limit to how small an object can be. Therefore, scientists are thrilled to have the possibilities of this new tool that will be opened up in the future time.

6 Things To Know About Telescopes Before you Buy

Our universe is huge and there is so much we don’t know about what’s out there. If you’re interested in studying the night sky, you’ll need to invest in a quality telescope, and make sure to read about the best telescopes before you buy as there are so many types of telescopes for different needs. With a vast range of telescopes available to purchase, the prospect of making a big purchase can often be quite daunting. If you are an amateur hobbyist or an experience stargazer, these simple six things will help you make the right purchase and find a telescope that will last you a lifetime.

1. More magnification isn’t necessarily better

Things To Know About Telescopes Before you BuyA telescope’s product description may boast “300X” power or more. Be wary of such claims as more magnification doesn’t necessarily correlate to a better image quality.Whilst a higher magnification may make an object appear larger, it also means that light gathered through the lens will be spread over a wider space resulting in a less clear image in the eyepiece. For a beginner, lower magnification might in fact provide a better stargazing experience particularly if you are interested in viewing clusters of stars which are more spread out.

2. Multiple eyepieces

Telescopes should come with several interchangeable eyepieces or ‘oculars’ of both high and low magnitude. As you will be looking at many different kinds of objects in the night sky, some close, some more distant, some clustered and some spread out, it is important to have a few eyepiece options as each will require a different magnitude. Larger eyepieces require less light and make it easier to locate dim objects and keep them in view. Smaller eyepieces provide a higher magnitude and are useful for viewing very bright, far away objects.

3. Know your terminology

There are two common types of telescopes: refractor and reflector. A refractor telescope utilises two different lenses, a large one at one end and a smaller one which the one you look through. A reflector uses a curved mirror at the bottom of the telescope to gather light. Make sure you know which telescope suits your needs.

4. The larger the aperture, the better the image quality

Things To Know About Telescopes Before you BuyThe size of your telescope’s aperture determines its power and affects how far and how clearly you will be able to see objects. The aperture size impacts the telescope’s ability to collect light. The larger the aperture, the more light the telescope can collect and the better quality the image you will see. If you want to see crystal clear objects, go for a larger aperture.

5. Consider the size and weight

Think about exactly how and when you will be using your telescope. Telescopes with larger focal ratios and high apertures can be extremely heavy to transport. If you will need to carry your telescope around with you then consider a smaller instrument which will be more portable and could fit in the trunk of your car.

6. Invest in a high quality mount

Whilst it might not be the most exciting component, the mount is by far the most important element of a good telescope. The mount is the stand that ensures the telescope remains steady whilst you are looking through it. It will be extremely difficult to keep anything in focus if your mount is shaking. A high quality mount will keep your telescope stable and secure against vibrations and wobbles so you can view remote objects with precision.