Devleena @ Numer8

Episode 22 of the NewSpace India podcast had Narayan Prasad (NP) talking to Devleena about her company, Numer8. Numer8 is a Mumbai-based data science company that uses data obtained from Earth observation satellites to solve problems like disaster management, coastal community monitoring, infrastructure monitoring, wildlife, and biodiversity protection.

The present episode of the podcast talked about fishing and how Numer8’s app Ofish helps in this regard. They provide a mobile application to the fisherman who use the app to determine places to fish and also see what price they can get from the market for their catch. The fishermen use the app using transponders that were fitted on the boats by the respective State governments. Some also rely on mobile networks. At the same time, Numer8 also provides a dashboard to port authorities to protect the coasts and prevent over-fishing.

The app supports Tamil, Sinhala, English, Marathi and Bengali languages currently. It protects data obtained from satellite by providing limited field of view of about 20 km, with no data provided for fishing beyond 20 nautical miles and also not sharing data to fishermen in other countries.

The geospatial data is primarily sourced through NASA and Europe’s Sentinel data. Devleena says that timely data from ISRO has been an issue but they hope to use data such as the Ocean Colour Monitor data from OceanSat.

There were also two other brief discussions that I found interesting and I note them here for my own reference.

The app is an example of a downstream application of geospatial data. This means data obtained from satellites is provided to a customer in an easy to use format. This has been difficult to do in the Indian situation with not many companies looking at these downstream applications. As much as we need private companies to build space hardware and software we also need companies that can use the products obtained from putting satellites in orbit. Numer8 is one example of such a company.

In the past, ISRO has sold its fishing data to the Fisheries Department and relies on the Fisheries Department to get the data to the fishermen, who are the end user. This ended up with fishermen having data that they did not understand and spending too much time at sea to obtain their catch. This was the transmission of data from Government agency to another Government Agency which relayed the data to a Customer (G > G > C). The presence of Numer8 inserts a private entity in this supply chain. So, the flow of data becomes (G > P > C). This led to improvement in way by which data was presented to the end user or customer and ensured that the data was used by the same. The Private company studied the end user, found out why existing products were not used and made sure that the data was usable.

The second point related to Numer8’s contribution to the UN’s Sustainable Development Goals (SDGs). Devleena said that theirs was the only startup that presented to the UN that the oceans could be as much a source of food as land. Numer8 suggested that better data could feed people while ensuring that ocean fish population was not over-fished.

Astrobiology in India

I stayed in Lonar between July 2018 and June 2019. I was aware of the geological interest that the meteorite crater there held for the scientific community. I did not know what interest it held for the astrobiology community. I had the first opportunity to learn more when Jyotirvidya Parisanstha (JVP) hosted a lecture by Prof. Yogesh Shouche of the National Center for Cell Science. The lecture was about how Lonar Lake was a model for extraterrestrial life search! I kicked myself little for missing the lecture. Today’s podcast episode gave me a glimpse of what I probably missed.

Episode 16 of the NewSpace India podcast has Narayan Prasad (NP) in conversation with Siddharth Pandey, PhD. Siddharth heads the Center of Excellence in Astrobiology at Amity University, Mumbai. Below are the show notes from that episode.

Siddharth defines Astrobiology as the study of origin, evolution and distribution of life on Earth and the search for it elsewhere. He says Astrobiology formed the basis for some of the older space programs like NASA and Russia’s Roscosmos because it pertains to some of the fundamental questions that have been important to the human species like are we alone in the Universe and the search for life outside our planet. Siddharth wants to begin connecting to a network of people in India who are interested in Astrobiology. He returned to India after stints in America, Europe and Australia.

Siddharth says that astrobiology related experiments in India began in 2005 with teams led by Dr. Jayant Narlikar based out of IUCAA, Pune and TIFR, Hyderabad among others. This group believed in a theory called Panspermia – which says that life was bought to Earth by an asteroid impact at some point in the Earth’s history. This team conducted balloon experiments out of the field in Hyderabad that led to the discovery of bacteria living in extreme environments in the Earth’s atmosphere.

Siddharth says that the Methane search instrument (Methane Sensor for Mars – MSM) on board the Mars Orbiter Mission is an astrobiology experiment. He says ISRO had developed an astrobiology experiment knowingly or unknowingly. Methane is considered one of the bio-signatures that indicates the existence of life. Hence, existence of Methane corresponds to existence of life. He hopes we have more experiments flying to search for life in clouds of Venus and the surface of Mars. He hopes that the chance to carry micro-gravity experiments on board the 4th stage of the PSLV, SSLV and the upcoming human spaceflight mission, Gaganyaan increases the number of astrobiology experiment that can be designed and carried on these missions.

NP asks Siddharth if the lack of a Space Science roadmap is worrying. Siddharth says that he finds the fact that we have no clear Space Science roadmap concerning especially given ISRO’s plans for missions to Mars and Venus in the near future. He says that several meetings on these experiments have been held but the outcomes of these experiments need to be more widely shared. He hopes that in the future, scientists are involved right mission planning and architecture stage of the mission itself to design better payloads.

Siddharth says that there is a need for a National Committee for Astrobiology that brings together various Government departments like DST, DBT etc to develop a roadmap for Astrobiology and to co-ordinate an astrobiology program. He says that ISRO has been good at developing platforms for astrobiology experiments in space.

He then talks about analog environments that are present in India. He speaks about Ladakh, Kutch, Lonar in Maharashtra and Antarctica. He says that the low atmospheric pressure, low oxygen, high ultraviolet ray exposed environment which are well preserved for centuries in Ladakh provides conditions that are analogous to an early Mars.

He says that hypersaline bacteria and jarosite minerals found in Kutch have been studied by PRL, Ahmedabad and papers have been published in scientific journals. He says that being one of the largest continuous salt expanses make it an interesting field of study for it’s similarities to early Mars.

He says that the impact of a meteorite in basaltic rock, a form of rock formed by melting of volcanic rocks means that it takes longer to weather compared to meteorite impact on other types of rocks.. The site at Lonar, Mahrashtra is one that is most accessible among two other similar sites in the world. He says that Lonar also has a lake formed by a drain of a spring that drains into the crater. This is similar to the landing site for the Mars 2020 which may be going into a dried site where a lake such as the one in Lonar probably existed at some point in Mars’ history. Lonar offers similar basin and depositing mechanisms which scientists can compare and study from.

Siddharth says India has two sites in Antarctica – Maitri and Bharati. Of these, Bharti station is located on Larsemann Hills. The hill is of interest because it is ice-free. This is because geothermal heat prevents ice formation. This means scientists have access to rocks and access to study bacteria living in rocks which survive in dry and cold regions of Earth. It also has a permafrost where the ice has not melted as it is under the soil. Here the ice is preserved for centuries and hence of interest to scientists.

NP then asked about how a person interested in astrobiology can pursue it as a career option. Siddharth says that they are in the process of putting together a website with freely available reading material. Siddharth suggests that interested students can pursue Astrobiology at the post-graduate level after pursuing an under-graduate program in Biology, Physics, Chemistry, Engineering etc.

NP then asks Siddharth about possible citizen science efforts that can be undertaken in astrobiology. Siddharth talks about the development of a Space Citizen Network where citizens can get connected to research groups working in the field. He also suggests that citizens could connect with these groups when they go on field trips. There are plans for a field trip to Kutch in October 2020 and to Lonar in November 2020.

There are also plans for projects that can be undertaken at home. One of the plans is to distribute marbles and citizens can report back after studying microbial colonies that grow under the marble. Scientists are interested in understanding how microbial colonies grow and attach themselves to rocks. They also want to learn what environments support growth of these microbial colonies. This can be in addition to similar amateur astronomy projects like identifying asteroids etc.

NP then asks whether there are plans for an independent road-map for Astrobiology of Government efforts for the same. Siddharth says that plans are afoot to formalize a Society of AstroBiology Education and Research (SABER) that could be registered in Maharashtra. He says that the group had already met twice – once in Lucknow and once in Pune. They hope to develop a roadmap for the future growth of the astrobiology community. They might also consider contributing to mission objectives on future missions to Mars and Venus.

NP asks about raising funding for astrobiology experiments. Siddharth says that there is no single source for funding for astrobiology. Mostly, scientists raise funds from different departments and societies based on either where they are coming from or from organizations that are involved in their area of interest.

ISRO provides funding through its RESPOND and SNAP. He says that they have previously raised funding from companies like Tata Motors and National Geographic Traveller magazine. He is currently also thinking of reaching out to philanthropy houses in Mumbai to access funding for the future projects that they are thinking of undertaking.

Siddharth says that Amity is planning to put together a weekend program called Space for Everyone which would generate awareness about space. At the end the people who complete the program can join the Space Citizen Network. He says that astrobiology popularization has been hurt as there is a lack of credible speakers. He hopes that efforts above address these issues. Amity has also launched India’s plant growth space flight experiment called the Amity Space Biology Experiment -1 (ASBE-1).

On the role of the Media, he says that media should do more than simply cover events. They must provide a forum to discuss, analyze and critique events. He says that it must enable two way discussion between the scientist and the citizens. He says that India must look at reasons for which it is pursuing a scientific program.

NP says India has a strong Biotechnology and Pharmacy industry. He asks Siddharth about what is the scope for Indian biotech and pharmaceutical companies in participating in Astrobiology. Siddharth responds that astrobiology experiments would give these companies an opportunity to research how the human body behaves in microgravity and experiment with chemicals and drugs. He says that while there are applications in fundamental research, it would largely serve marketing purposes currently. Companies could showcase how their products are used in space programs and how their designs can be used in extreme conditions such as in space.

NP then asked where Siddharth sees the future of astrobiology in India. Siddharth replies that he hopes that ISRO works on larger support and infrastructural missions with private sector works on supporting low earth commercial missions. For astrobiology in India, he hopes that there is an active scientific society, meeting often to exchange knowledge and builds cross-domain and inter-disciplinary expertise that is needed. He also hopes India undertakes future missions to the moons of Jupiter and Saturn – Europa and Enceladus, that are considered some of the other sites in our solar system which could support life.

End of show notes.

This podcast also gave me a stream of ideas. We could Astrobiology Cafes to discuss recent developments in the field. As missions progress in this direction, I also think there will be discussions surrounding ethics and safety that arise. I do not see how these are tackled by the astrobiology community. This conversation excited me a lot, opened my eyes to what astrobiology really is about and agree with NP’s comment in the end that it was a dense knowledge transfer rich episode of the podcast. This reminded me so much of my days from 2009 when I developed a Lunar Analog Research Station.

Planetary Radio on Asteroid Bennu descent

Asteroid Bennu is slated for a close encounter with Earth in 2175. It is expected to be the asteroid that has the most chance for a possible Earth impact over the next 200 years. Hence, it was selected for NASA’s OSIRIS-REx mission.

Mat Kaplan at Planetary Radio sat down to discuss the mission with it’s Principal Investigator, Dante Lauretta. The mission is of interest because it will descent on Bennu’s surface in August 2020, collect a sample and return it to Earth in 2023. These are my podcast notes from that episode.

Lauretta talks about the mission updates till now. The spacecraft reached the asteroid and has been doing a series of mapping the surface of the asteroid. In December 2019, they selected the landing site, code-named Nightingale. All surface features on Bennu named so far are named after Egyptian birds. Bennu itself is named after an Egyptian mythological bird, that probably inspired the Greek bird, the phoenix.

The final four candidate OSIRIS-REx sample sites. Image Credit: Wikipedia

He then talked about the surprise of finding the surface of the asteroid so rocky. Apparently, radio and infrared studies of the asteroid’s surface had predicted the surface to be smooth. They had designed the instruments using the experience gained on the Hayabusa spacecraft which had a 25-meters radius for operations. They had given themselves a 50-meters radius for operations. But, the current landing site gives them just 5-meters. This means that they had to drop the LIDAR based landing navigation system and use a more optical based hazard avoidance system to land on the surface.

He then talked about cross-pollination between the Hayabusa and the OSIRIS mission with people working in each other’s projects. This is part of the on-going collaboration between NASA and JAXA.

They then spoke about some of the public outreach efforts of the mission. This is usually an integral part of all NASA missions. However, OSIRIS’ education and public outreach budget was cut in 2018. Lauretta then took it upon himself to continue the work. He designed board games and also supports Target Asteroids!, a program that takes help from amateur astronomers to observe certain asteroids. The board games include X-tronaut and Constellations.

Unrelated, but the episode ends with a session of Space Poetry.

The Elon Musk book

Elon Musk: Tesla, SpaceX, and the Quest for a Fantastic Future

Elon Musk: Tesla, SpaceX, and the Quest for a Fantastic Future by Ashlee Vance

Buy the book with my Amazon Affiliate link.

My rating: 5 of 5 stars

This book came out in 2015. I heard it a full 4 years late in 2019. I waited both for price of the book to go down and waited to hear for feedback from others before embarking on reading the book myself.

Musk himself says that the biography is rife with errors.

There are many things that I learnt from the book. How it took Musk’s maniacal obsessions with the topic (electric cars and space exploration) to get things to a point where the companies (Tesla and SpaceX) turn profitable. Musk synthesized a lot of information, however others delivered on his vision. And that his vision changed as the situation changed.

Musk also goes back on the outsourcing model for both SpaceX and Tesla. His gigafactories are experiments in manufacturing under a single roof. It is worth following and for India, perhaps worth emulating?

I think you should read this book to learn about significant shifts in thinking that this book covers like the one on manufacturing that I captured here.

View all my reviews

Article in Firstpost on India in Space in 2019

Way back in 2009, I had written an article for CNN-IBN Blog, about ISRO @ 40.

Almost ten years later, I had the opportunity to write for Tech2, the Science and Technology supplement to Firstpost of Network 18. I wrote for them about looking back at 2019 through the two RISAT missions, the ups and downs of the ASAT test, the euphoria of the first successful mission flight of the GSLV Mk III with Chandrayaan 2, the sense of loss we felt when we lost communication with the Vikram lander and the 50th launch of the PSLV. I also covered some of the funds that new private space comapanies (called NewSpace) raised during the year.

Link to the article is here.

Chandrayaan 2 Lander wreckage found

NASA’s Lunar Reconnaisance Orbiter (LRO) payload, Lunar Reconnaisance Orbiter Camera (LRO-C) released news early morning on December 3, 2019 that they had located wreckage of Vikram, the lander on India’s Chandrayaan 2 mission. The post credited the find to a Chennai based techie, Shanmuga Subramanian.

Vikram impact point and associated debris field. Green dots indicate spacecraft debris (confirmed or likely). Blue dots are locating disturbed soil, likely where small bits of the spacecraft churned up the regolith. “S” indicates debris identified by Shanmuga Subramanian. Portion of NAC mosaic made from images M1328074531L/R and M1328081572L/R acquired 11 November [NASA/GSFC/Arizona State University].

Shanmuga located the wreckage by comparing images released by LRO-C on September 26 (but taken on September 17) with the ones released earlier. He alerted NASA and ISRO about his find via Twitter. NASA’s LROC team then imaged the area again in October and November to confirm the debris. He got no response from ISRO as per news reports.

On the next day, ISRO’s Chairman in a statement to the press said that they had already located the lander on the day after the crash. ISRO’s statements from the period said that while the lander was located, efforts were on to establish communication with it. NASA’s Deep Space Network (DSN) continued efforts to hail Vikram after the crash.

As a scientific organisation, ISRO should know that until they publish, they cannot claim a discovery. The Chairman’s reference to the statement published on the ISRO website only says that they have located the lander. LROC’s success here is locating the debris and publishing the same with image data.

Media reports then claimed that the lander was intact. This was based on a statement received from someone within ISRO. I don’t think news organisations would publish something like this without an inside source. This points to the fact that ISRO did not know the condition in which the Lander was in.

The text released with the LROC image states that the lander wreckage is found 750 meters from the landing site. In Parliament, ISRO submitted a report stating that Vikram hard landed within 500 meters from the designated landing site. This is an aberration. Sankaranarayanan Viswanathan analysed NASA’s own orbital data and released it on Reddit that the site maybe 520 meters from the designated landing site. This seems closer to ISRO’s report than the LROC team’s finding.

This is a nice finish for the articles I write on the Chandrayaan 2 lander, the last of which you can find here. This allows scientists to study the debris to understand Vikram’s last few minutes on the Moon that could help scientists better design Chandrayaan 3’s lander.

I do hope ISRO proactively releases information like this and encourage citizen scientists like Shanmuga. We need more not less of this.

Remote sensing in India

I wrote an article for The Wire on India’s remote sensing programme, that got published today.

While writing the article I discovered the orphaned Wikipedia page that was once updated with launches of Indian remote sensing satellites. The article had not been updated for a very long time. The focus now seems to be on the List of Indian satellites launched by the decade. Working on the article helped me get back into Wikipedia editing and helped me discover one of the points that I raised in the article.


Today, we see many engineering colleges that are keen to work on a cubesat or a micro satellite project. However, what happens practically is that components are obtained Commercial off the shelf (COTS). This means that when working on the project, you get exposure to the project at a systems level and understanding how things work with each other but not really working too much on testing the limits of the payload.

Image: Internal mechanism of a cansat

The payload is the heart of any project. Everything else is just effort taken to take the payload to a destination. If you want to develop your skills regarding developing payloads in very cramped environments, cansats may give you much more challenging problems. In this post, I am exploring the world of cansats.

Cansats carry payloads inside a Coca-Cola can. It can be a can of any other soft drink too. Today, we get cans of varying types and I think it would be more interesting to test these before or while working on your project. A cansat lets you think outside the box, no can. It also lets you work within restrictions.

Most of the payloads for cansats look at measuring temperature, altitude, attitude, pressure or a combination of these. You could also check for more complex things like chemical composition as well but the complexity of the payload goes up. These deliver scientific data from your payload. These payloads make sense if you belong to a science department.

There are engineering experiments you can do with cansats as well. You could carry payloads that work on attitude control as well. These try to keep the can pointed straight up as they descend. You could design ways to store and deploy parachutes to slow down the cansat as it comes down. This increases the time for which the payload remains active and collects data. At the end, you could devise ways on how to find the cansat on the ground using things like light or radio beacons. These make sense if you belong to an engineering college or department.

The question is – how do you launch cansats? It could be using a model rocket, trace a parabolic path and land somewhere. There could be other innovative launching methods as well, within the boundaries of safety. You could drop them from the top of a skyscraper or just a building. If you can get your hands on a drone, maybe launch it from the top of a drone. If you have access to a small airplane, maybe drop them from the window of a small airplane. You could drop one down from the top of a telephone tower. TIFR in Hyderabad has a balloon facility that you could use or piggyback on. In launches safety is an important consideration. Alert people about what you are going to do. Better safe than sorry.

Vikram Landing

Vikram is what ISRO calls the landing module of the Chandrayaan 2 spacecraft. The last we checked in on Chandrayaan 2, we witnessed the separation of the two modules of Chandrayaan 2. The orbiter module was in the correct orbit at the time of the separation.

Vikram then performed a couple of orbit lowering manoeuvre to reduce its orbit around 100 km by 30 km. As it approached the landing site, the spacecraft followed the desired trajectory through the rough braking phase where the speed of the vehicle was reduced drastically. All seemed to be going well up to this phase. The telemetry data sent back to ISRO Tracking Centre (ISTRAC) followed the mission plan.

The spacecraft then seemed to be deviating a bit from its track but seemed to be making an effort to return to the original path. The animation on the screen showed the spacecraft toppling over. It seems that Vikram was trying to stay in the correct orientation. At this point, ISRO said that they lost communication with Vikram at about 2.1 km above the lunar surface.

Doppler data from Vikram. Image: Cees Bassa, Dwingeloo Radio Telescope, Tweet.

We don’t have data as to what happened after this point. Doppler data received from Amsterdam’s Dwingeloo Radio Telescope was tweeted by Cees Bassa, an astronomer who was following Vikram at the telescope. This seems to show a “zoom” at the end which seemed to indicate a crash, according to him.

ISRO’s own telemetry screen at the last available data point seems to indicate speeds which were considered too high for a proper landing to take place at the end. The above tweet is from Jason Davis of The Planetary Society who also has a good summary of events with some international context on their blog.

I was initially unhappy that the Prime Minister Narendra Modi walked away from ISTRAC letting ISRO Chairman K Sivan do the announcement. But, today morning he came back and with data announced that communication was lost. The data is still being analysed.

There are currently two orbiters in orbit around the Moon, Chandrayaan-2’s orbiter module and NASA’s Lunar Reconnaisance Orbiter. Each should be having an orbit around 2 hours and so might come over the landing site within this month and we should be able to have a look. This would give final confirmation on what happened early today morning.