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We are Stellar

Welcome to Stellar Space Studies.
We are a small startup based in Toulouse, France (formerly known as Géode & Cie). We work in the space industry, performing studies and processing data for Earth observation
missions. The CEO of the company, Stéphane Bourgogne, is a former student from SUPAERO in Toulouse and Ecole Sainte-Geneviève in Versailles (“Ginette”). We like a touch of non-conventional thinking in our work and we like to engage with characters who stand out of the ordinary and who like to defy the routine. Learn more about us and about the many reasons why you will love to work with us.


We love what we do.
We are passionate about it. We think there’s no better way to do good work than to love what we’re doing.


Keep it simple.
We work for big companies but we have a small startup mentality. W
e are flexible. We like to keep things simple and to make your life easy. 


Less talk, more action.
We like fast, clean and quiet work. We like to work in depth so we master our subject. We are curious, so we can learn any topic very quickly, and become an appreciated partner in no time. 

Long-term partnership

We are long-term oriented.
Like friendship and good wine, the best qualities develop and flourish over time. We are patient, persistent and we stick through difficulty. We value partnerships that stand the test of time. And we know that it sometimes takes 20 years of work to make an overnight success.

What do we do?

Our primary skill is to process data from Earth observation satellite missions. We are fond of science, mathematics and coding. We are experts in the calculation of the Earth’s gravity field from space, with over 18 years of experience in orbit calculation, data processing and system inversion. We are also excellent developers. Since we handle a lot of data, we like to build efficient tools that turn difficult tasks into a smooth and easy experience. This is why we became experts in creating interactive tools for data visualization. 

Space geodesy

Our team has over 18 years of experience in calculating Earth's gravity field from the GRACE satellite mission. Working for the French Space Agency, CNES, we are among the very few teams in the world who have the theoretical knowledge and the practical experience to do those calculations. And now, after many years of GRACE success, we are excited about the GRACE Follow-On mission, which has delivered its first datasets. But, by the way, why do we calculate Earth's gravity field?

  • For space science and orbit calculation. The space industry needs accurate and up-to-date gravity field models in order to calculate the precise orbits of satellites.
  • For Earth’s climate and environment. You might not know about this yet, but gravity allows us to see the movements of water on Earth. Floods, droughts, monsoons, ice melt, ocean level variations, create small variations in the gravity field which can be measured by satellite missions. Gravity is therefore a unique and fascinating tool to monitor climate and the water cycle on Earth.
Learn more

Data visualization

We process and produce a lot of data. Quantities of it. But we also like to know what we are doing. Therefore, we need smart tools to analyze our data and exploit our results. At some point we really felt the need for a nice, powerful, graphical user interface, that would make our life easy, so we could focus on our main interest, and get exactly what we wanted with one click of a mouse. We like to invest time and efforts today in order to save time and efforts tomorrow. We also like when things work perfectly with just one click of a mouse. Maybe you feel the same about your own data. We have good news for you: we can help. We build great interactive tools, and we love doing it!

  • Intuitive and user-friendly
  • Fast and efficient
  • Comprehensive
  • Beautifully designed
  • Universally praised by users
Learn moreTry it yourself

Why working with us?

This may be the start of a long story.

As a client

“The difference between ordinary and extraordinary is that little extra” (Jimmy Johnson). You’re looking for the right partner who will be happy to advance your project, serve you and go the extra-mile for you. Stellar is here for you. 

As an employee

You’re smart, you’re kind, you love science, mathematics, coding, and you don’t see yourself becoming an anonymous number in a big company. You like to make a difference. You like to serve others. You’re looking for an intellectually challenging environment and a warm human adventure. Stellar is the place for you!

As a consultant

You’re a senior, and society has just decided to put you to retirement. But you just hate the idea of retirement. We value your life-long experience and we love intergenerational cooperation. We love to match the wisdom of the old with the strength of the young. You’re still full of ideas, your mind is always busy, and you still have a lot to give. Get in touch, and let’s write your next chapter together.

Get in touch

You have a project, an idea, a question? You would like to learn more, or just get in touch for a coffee? We would love to hear from you. Send us an email and we’ll get in touch. And who knows, it may be the start of a long story.

Get in touch


Simplicity is the ultimate sophistication

Leonardo Da Vinci

I find that the harder I work, the luckier I get

Samuel Goldwyn

Genius is one percent inspiration and ninety-nine percent perspiration

Thomas Edison

Kindness is the language which the deaf can hear and the blind can see

Mark Twain

Quality means doing it right when no one is looking

Henry Ford

Whenever you find yourself on the side of the majority, it is time to pause and reflect

Mark Twain

The secret of getting ahead is getting started

Mark Twain

When someone does something good, applaud. You will make two people happy.

Samuel Goldwyn

If you love life, don't waste time, for time is what life is made up of

Bruce Lee

Fortune favors the prepared mind

Louis Pasteur

Those whose work and pleasure are one are fortune’s favoured children

Winston Churchill

Never give up. Today is hard. Tomorrow will be worse. But the day after tomorrow will be sunshine.

Jack Ma

Stay hungry, stay foolish

Steve Jobs