DeepSpace. Your way to space world Russia

AN APPLICATION FOR THE ONES WHO WANT TO BE CLOSER TO UNKNOWN
DeepSpace is a mobile app that will allow people to communicate in their very own space community, follow blogs and topics, leave likes and comments on them or create their own articles.
Application provides user features such as the asteroid radar wich allows to track potentially dangerous asteroids, watch photos from Mars, find out the location of planets in real time using the Space Navigator, setup notifications for upcoming SpaceX launches so as not to miss broadcasts and discussions of these events
For what purpose?
Popularization of space and science
An opportunity to discuss the latest events and communicate with like-minded people
A handy tool for setting reminders about upcoming SpaceX launches
The space navigator allows to point the phone in the right direction in order to find out which planets are located there right now
Asteroid radar dispels all fake news about the treat approaching Earth
Quick access to technical specifications of SpaceX ships and lots of interesting information and facts to read
Team SpaceBerserkers

OUR TEAM
Yana Gladkikh
The idea, plan, client-server part, space navigator
Vladimir Abubakirov
FireBase support, backend, notifications
Denis Shaikhlbarin
Unified UI/UX, asteroid radar, mars photos
Danil Khairulin
Room caching, dependency injection, design
Samuil Nalisin
Architecture, UI for social part, home tab, blogs
Team SpaceBerserkers
We are the team of developers from all over the Russia. We are living in different cities across our country, but it doesn’t prevent us from being friends and creating team projects.
Yana Gladkikh - Voronezh, Vladimir Abubakirov - Moscow, Samuil Nalisin - St. Petersburg, Denis Shaikhlbarin - Ufa, Danil Khairulin - Kazan

MAIN TOOLS
KOTLIN
Modern language that makes programmers happier
MVVM
Architecture pattern recommended by google
FireBase
Easy data storing
Hilt
DI framework specially for android
Team SpaceBerserkers

OUR TEAM
Yana Gladkikh
Samuil Nalisin
Vladimir Abubakirov
Denis Shaikhlbarin
Retrofit
Maps Sdk
OpenGL
Sensors
Android Navigation
FireBase
SharedPreferences
FireBase storage
FireBase auth
Sentry
Room db
Hilt
Android navigation
Coroutines
Compose
Hilt
RecyclerView
Android lifecycle
Retrofit
Danil Khairulin
Material design
Material motion
Animations
Epoxy
Wallpapers
CustomViews
Glide
Team SpaceBerserkers

THE FEATURES
COMMUNITY
Discuss, share and find new friends
ASTEROIDS
Can you see some star shower today?
MARS
Take a look at photos taken by Mars Rovers
UPCOMING EVENTS
Don’t miss SpaceX launch live!
SPACEX
Learn about the most known private space company
SPACE NAVIGATOR
Where are the planets now?
Team SpaceBerserkers

HOME PAGE
IMAGE OF THE DAY FROM NASA
Learn something new everyday
QUICK NAVIGATION AND LATEST NEWS
You can use homepage to switch on the other category or have a brief look on latest space news
Samuil Nalisin & Vladimir Abubakirov

BLOGS & NEWS
NEWS
Read and leave comments on the latest news
BLOGS
Share your own posts
Samuil Nalisin & Vladimir Abubakirov

HOMEPAGE, BLOGS & NEWS TECHNICAL SIDE
Samuil Nalisin & Vladimir Abubakirov

SPACE NAVIGATOR
Point your phone into the right direction
Allow to recognize your location
Learn what are those small stars you see in the sky!
Yana Gladkikh

CALCULATING LOCATION OF PLANETS
In order to determine the location of the planets we’ve used Orbital Elements (Keplerian Elements)
a(AU) - axis
e – eccentricity
i – inclination
w – argument of periapsis (perihelion)
l – longitude of the ascending node
m – mean anomaly
v – true anomaly
E – eccentric anomaly
Data provided by NASA official site
Yana Gladkikh

CALCULATING LOCATION OF PLANETS
With the help of orbital elements, it is possible to calculate the heliocentric coordinates of the planets. Knowing these coordinates, you can find Ra and Dec (Right ascension and declination), and knowing them, you can finally calculate the geocentric coordinates and place the planets on the grid
First of all we need to calculate the true anomaly. According to NASA materials, it can be done by solving the Kepler equation
So, by solving the equation, we will find an eccentric anomaly. To do this we need to decompose the series :
The true anomaly is expressed from the eccentric according to the formula:
Yana Gladkikh

CALCULATING LOCATION OF PLANETS
To calculate the heliocentric coordinates, it is still necessary to find the radius vector
Great, now when all values have been found, we will calculate the coordinates according to the formula:
Next let’s find Ra and Dec
Ra:
Dec:
Finally, calculate the geocentric coordinates
Yana Gladkikh

CALCULATING LOCATION OF PLANETS
Now we know the location of the planets and it remains only to place them on the grid.
The grid is created with 3D graphics using OpenGL. Two layers are used: lines and planets.
But it is not enough just to create a grid, it also must respond to the movement of the phone, move in accordance with where the user decided to direct it. We used phone sensors to make this into life
It's possible to talk about how all this works for a long time, so I'll try to tell you in general terms.
In three-dimensional space, the device has 3 axes. In the code, these axes are represented as vectors. With the help of sensors, you can get a value such as the ROTATION VECTOR, which returns the position of the device in space as an angle relative to the axis. Using this vector we can get the rotation matrix using the getRotationMatrixFromVector function of the SensorManager library class
To determine where the phone is directed, it is necessary to calculate the transformation matrix. We have a matrix of phone coordinates and a "magnetic" matrix with magnetic coordinates. Multiplying them, we get the desired matrix. Finally we need to calculate the direction vectors of the phone and in the activity we will transfer them to the thread responsible for rendering the map
Yana Gladkikh

CACHING
Most modern applications use a local database to store or cache data received from a remote source. That’s why our project uses the Room library to work with sql queries
The advantages of caching are the increasing speed of data loading and the ability to load previously viewed content without a network connection
How caching works?
When the screen is shown to user, the first step is to download data from the local database
A request is sent to the server
After the server's response, the data on the screen and the local database are being updated
Danil Khairulin

DEPENDENCY INJECTION
Dependency injection (DI) is a method widely used in programming and recommended by Google for creating android applications. By following the principles of DI, we make the application architecture cleaner and more readable for those who ever will join us or review our code.
Implementing dependency injection provides the following pros:
The ability to reuse the code
Easy to refactor
Flexible for testing
Danil Khairulin

APPLICATION UI
In order to improve the user experience while using the application, it was necessary to create a uniform appearance. As a result, we've developed a semi-transparent interface design with the addition of colored shadows from objects on a dark background, as a result of which associations with interstellar clouds may appear. It allows you to immerse yourself into the application with greater interest. Particularly there is a single design for the process of "loading" pages.
Denis Shaikhlbarin

ASTEROID RADAR & MARS ROVERS
ASTEROID RADAR
Are there any asteroids near to Earth ?
MARS ROVERS
What would you see if you stood on a Mars?
Denis Shaikhlbarin

UI TOOLS STACK
AirBnB Epoxy
Optimize display and loading
Sticky headers
Custom Views
Custom Views for creating a unique interface
Motion Layout
Beautiful smooth animations
Coordinator layout, material components
User-attracting modern design elements

In conclusion, we would like to say that Deep Space is one of the best applications for people who are interested in space subject matter or for those who are just about to start diving into this huge community.
Its main purpose is to increase people’s interest in space, give some basic knowledge about this sphere so that they may become the ones who create future of the humanity
Our team managed to create a stable working application. We’ve gone through thousands of bugs, solved plenty of merge conflicts. Also, we were able to discover something new by working in a team.
Development prospects:
Adaptation to different languages
More space objects on the grid such as stars
Our own server and site (already in process)
More technical information
Information about NASA missions
Notifications for other space events, not only SpaceX
Conclusion
You can check our open source code via the links:
https://github.com/BrightOS/DeepSpace and https://github.com/DeepSpaceTeam