If you are interested in astronomy due to solar eclipse, let us know about an app to install in your phone.



A cosmological app in the palm of your hand!

An exciting event took place in space yesterday - a circular solar eclipse or say 'Ring of Fire' solar eclipses! The spread of the corona virus has disrupted daily life on Earth, but everything in space is moving at a steady pace! Yesterday's solar eclipse was the result of such a fixed, fixed, annual cycle of events!

We all know that the various planets in our universe revolve around the immovable sun, these planets have their own satellites. The earth itself rotates on its axis, tilted slightly, and at the same time revolves around the sun. If we talk only about the earth, due to the orbit of the earth around the sun, the motion of the earth on its own axis and the orbit of the moon around the earth, various exciting astronomical events are created. One of them is this kind of annual annular solar eclipse.

Such a solar eclipse occurs when the Sun, Moon and Earth are in a straight line, all three on almost the same surface (when it comes to the universe we have to think in three dimensions, so the combination of both a line and a surface becomes necessary).

Also, between the sun and the earth, the moon should be at such a distance from the earth that it does not completely cover the sun, but covers it so much that the bright light of the sun is visible around it and a ring is formed!

Such astronomical events lead us to various questions, which we do not pay enough attention to in our daily lives. For example, during the day or especially at night, will there be anything beyond what we see in the sky with the naked eye? If so, what will it be, how will it be? What is the space that astronomers see through a telescope?

We know why it happens day and night on Earth, but does it take 24 hours for the Earth to rotate on its own axis, or does it increase or decrease? Is it 365 days or less for the earth to complete one cycle around the sun? Leap year comes every four years and one day fluctuates in February. What does this have to do with all this? Every day we see the moon getting smaller and bigger, the question of what exactly causes it either does not arise in our minds or does not go deep into it.

In the past, we had to become astronomers to know the answers to such questions, now it is enough to just download one or two apps in a smartphone, there should be a lot of curiosity in the mind. After that, if we cross the barrier of English language, the universe can fit in our palm!

Cosmography in smartphones
 If you search for 'astronomy' in a smartphone, you will find a number of apps (search for 'astrology' but you will find different types of apps based on astronomy!).

Astronomy - Astronomy based apps give us the opportunity to explore space on the screen of a smartphone. If this type of app is quite large in size then our curiosity starts to waver on this issue. At that stage curiosity is aroused and even if we install the app, then we start moving forward by seeing a number of options on the screen rather than opening it and seeing names that are totally unfamiliar, even difficult to read.

Such apps have a wealth of information but their use is not easy to understand quickly, so we are slow to move forward.

At this stage, if we have a little patience (and courage!), Then we can explore the options of the app, then gradually many secrets of the app and the universe will start unfolding before us!

How these apps work
 These types of apps often work in two ways: one, all the data available in our universe that is static, unchanging for us, such as stars, clusters, nebulae, galaxies, etc., is collected and then our location, According to the date and time, we are shown the location of all of them in space in the way they appear.

On the other hand, data is also collected about things that are constantly orbiting in space, such as the moon, various planets, their satellites, man-made satellites, etc., and where they will be in space according to their orbit and speed, according to a fixed place and time. By determining that we are shown on the screen.

Let's check out one such app
 An app called 'SkySafari' has been popular for years among people interested in astronomy. Earlier this app was fully paid but now it is divided into three levels: Basic, Plus and Pro. Due to these three types of levels, this app can be useful to anyone from the most intriguing people in the universe, to curious people like us, to professional astronomers who are deeply involved in this subject. In addition, the benefits that used to be available only to the users of the iOS app in this app are now also available to the users of Android.

When it comes to data from all over the universe, it is obvious that the size of the app is also much larger. The basic, free version of this app will take up 239 MB of space in your smartphone (although now if you have also given various Chinese apps from the phone, there will not be much problem of space in the phone!).

The beauty of 'SkySafari' app is that we can use this app offline after downloading 239 MB of data in the phone for the first time while installing the app.

SkySafari is like a powerful planetarium that allows us to see thousands of stars, planets and other celestial objects on the screen of a smartphone and learn a lot about them. Even the basic free version of SkySafari has enough treasure for us. In this version we can see more than one lakh thirty thousand stars, more than two hundred star clusters, nebula, galaxy, all important planets, satellites etc. The speed of man-made satellites like the International Space Station can also be seen in the app. This app contains a number of articles explaining the basic concepts related to astronomy which are written in a very simple language despite being a confusing topic.

How to re-watch yesterday's solar eclipse in the app?
 To view significant astronomical events of the current month in the app, click Calendar in the menu below. As such, a list of events for the entire month will appear. Click 'View' in it for June 21, 2020 'New Moon and Annual Solar Eclipse'. So the file of its settings will be downloaded to the phone.

This way we can download different things settings. To activate these settings, on the main screen, go to 'Settings' in the main menu at the bottom. It will show the file of settings you downloaded in 'User Data'. Click on 'Save and restore settings "to activate.

Click the file we downloaded date i.e. June 21-2020. Now 'apply' it. Basically, in order to see that astronomical event, we downloaded the relevant files in the app and also activated it. From here the app can be 'factory reset' and its original settings can be restored.

So now on the screen you will see the position of the solar eclipse at 7.51 minutes as above. Remember, this is a situation seen from somewhere else. In the app in general, after setting our location, the position of the space can be seen accordingly.

Now to see the starting position of the eclipse, move the time to 7.45 by right clicking the left arrow of 'Now' when there is a 'minute' in the time panel Now select 'Seconds' instead of 'Minutes', by clicking the far right arrow, the position of the moon will change according to the seconds and the eclipse will appear exactly at 7.51 minutes!

Understand the main aspects of the app
 There are a number of options in such apps that can confuse us, but after finding the 'Help' section and understanding the main features and settings of the app, it becomes much easier to use the app. The same is true of the SkySafari app - it will seem difficult at first, then everything will become easier!

There are two main parts to the app. At the bottom there are various tools, according to which the things we have chosen, can be seen in the space at the top. Setting our current time and location in Settings will show the status of that moment. Instead of turning on the compass, you can turn the phone to see where the sun, moon, etc. are at the moment.

It is especially important to understand the main tools of the app. Some tools like 'Cosmos' are paid, but most of them are free. Above the tools is the time panel, which we can change from seconds to years, accordingly, to see the changing position in space. Day and night, seasons, etc. can be understood in this way! More information about each of these can be found in Help.

At the top of the 'Search' tool is a list of various items that may appear in 'Tonight's Best' that day. From here, in addition to the sun and various planets, we can search for the brightest, closest stars, constellations, and meteor showers. Get more information by clicking on the item.

Such as 'Whirlpool Galaxy' in 'Best Deep Sky Objects' will open an article about it. At the bottom of the same page, by clicking on 'Center', you will see its day-time position in space. Rather than zooming in on the screen, an image that looks like this galaxy in a telescope will appear on our screen!

It's really like starting an app with 'Help'! The Intro section contains information about the app while the Basic Concepts section contains almost all the basic information needed to delve deeper into astronomy. If you don't fully understand the cosmology, even if you just check these articles at leisure, you will learn a lot of new things!

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