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When Indian space agency scientists set out to design the Chandrayaan-3 moon mission, they knew they had one more chance to make history with a landing on the lunar south pole after a failed attempt four years ago.

They also had to do it on a shoestring budget and ended up spending only Rs. 6.15 billion on the mission.

From managing costs on rockets to developing a built-in-India supply base, the Indian Space Research Organisation’s (ISRO) success with the Chandrayaan-3 moon landing shows how it has honed a system of doing more for less, officials, suppliers and analysts say.

ISRO’s record for frugal innovation will be tested by upcoming missions, including a project to study the sun set to launch next month and a plan to put astronauts in orbit.

Although India’s government allocated the equivalent of $1.66 billion (nearly Rs. 13,700 crore) for the department of space for the fiscal year ending in March, it spent around 25 percent less. The budget for the current fiscal year is $1.52 billion (nearly Rs. 12,560 crore).

By contrast, NASA has a $25 billion (nearly Rs. 2,06,585 crore) budget for the current year. Put another way, the annual increase in NASA’s budget — $1.3 billion (nearly Rs. 10,750 crore) — was more than what ISRO spent in total.

“No one in the world can do it like we do,” said S Somanath, ISRO chairman and a veteran aerospace engineer, who was celebrating Chandrayaan’s successful touchdown on Wednesday.

“I won’t disclose all secrets, otherwise everyone else (can) become cost effective,” he said at a news conference.

One example of how ISRO contained costs on Chandrayaan-3: it opted to take a longer route to the moon, allowing it to use less powerful – and cheaper – propulsion systems. Chandrayaan-3 took more than 40 days to reach the moon, looping through widening orbits to use the Earth’s gravitational force as a slingshot.

By contrast, Russia’s Luna-25 mission, which crashed before its own attempted landing on the moon’s south pole, had been on a more direct course to the moon. Russia has not disclosed what it spent on the failed mission.

“To take a direct route takes more power, more fuel, and is far more expensive,” said Somak Raychaudhury, an astrophysicist and vice chancellor of Ashoka University. 

ISRO also developed some of the lander components itself, including the cameras, altimeter and hazard avoidance sensors. It used Indian suppliers for vehicle assembly, transportation and electronics to keep costs low. And it limited the number of design prototypes to save time and money.

“With local sourcing of equipment and design elements, we are able reduce the price considerably. A similar set up by an international vendor would cost four to five times,” Amit Sharma, CEO of Tata Consulting Engineers, which was a vendor to ISRO for the Chandrayaan-3 project, told Reuters.

Stretching every rupee

Many of the ISRO scientists who worked on the failed Chandrayaan-2 attempt to land on the lunar south pole in 2019 stayed on for the current mission. 

ISRO is gearing up to launch the Aditya-L1 spacecraft, a space-based solar observatory, in September. It has plans to send astronauts to space in a mission ISRO’s Somanath has said could come by 2025. 

ISRO’s success is also expected to provide a lift for the country’s private-sector space start-ups at a time when Prime Minister Narendra Modi’s government is looking to open the sector to foreign investment, suppliers say.

Ankit Patel, founder and director of Ankit Fasteners, which has been supplying nuts, bolts and other fasteners to ISRO since 1994, said there were times when parts had to be hand carried to a launchpad to meet a deadline.

“The unsung heroes of ISRO are the engineers who are pushing their suppliers every day to achieve the set timeline,” Patel told Reuters.

He added: “ISRO has been very frugal with its expenditure. ISRO needs to think out of the box to stretch every rupee.” 

© Thomson Reuters 2023

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NASA Solves Black Hole Jet X-ray Mystery with IXPE’s Polarization Powers

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May 9, 2025

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NASA Solves Black Hole Jet X-ray Mystery with IXPE’s Polarization Powers

The blazar BL Lacertae, a giant black hole with jets, facing the earth, have made scientists curious about how X-rays are generated in such extreme conditions for a while. NASA’s Imaging X-ray Polarimetry Explorer or IXPE now might have been able to solve the mystery. By a collaboration with radio and optical telescopes and using polarisation measurements of X-ray, IXPE’s produced results indicates that the interaction between fast-moving electrons and photons might be the reason for X-ray emission in such conditions.

Evidence of Compton Scattering

According to the IXPE’s findings, high optical to X-ray polarization ratio indicates that Compton scattering might be the mechanism of X-ray generation. There are two possible and competing explanations of X-ray emission in blazar jets. One saying if the X-rays in the black hole jets are highly polarised, then the X-rays are generated from interactions between photons while the other says a low polarisation indicates X-ray formation by electron-photon interaction.

Leveraging IXPE’s unique X-ray polarisation measuring ability, scientists conducted a focused observation on BL Lac in November 2023. During this period, BL Lac’s optical polarization peaked at 47.5%, the highest recorded for any blazar. Yet IXPE found the X-ray polarization to be much lower, capped at 7.6%. This contrast supports the Compton scattering and possibly irradicates the photon-based explanation.

Milestone for blazar studies

“This was one of the biggest mysteries about supermassive black hole jets,” said Iván Agudo, lead author of the study and astronomer at the Instituto de Astrofísica de Andalucía – CSIC in Spain. The discovery validates IXPE’s mission, launched in December 2021 to study X-ray polarization.

Astrophysicist Enrico Costa, called it one of IXPE’s most significant achievements. Yet, this is just the beginning. Project scientist Steven Ehlert noted the need to observe more blazars, as their emissions vary over time. With IXPE, astronomers are now better equipped to explore these powerful cosmic jets.

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SpaceX Falcon 9 Successfully Launches 28 Starlink Satellites to Orbit From Florida

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May 9, 2025

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SpaceX Falcon 9 Successfully Launches 28 Starlink Satellites to Orbit From Florida

SpaceX continued its rapid-fire Starlink deployment campaign on Tuesday night (May 6), lofting 28 more internet satellites to orbit atop a Falcon 9 rocket from Florida’s Cape Canaveral Space Force Station. The launch itself took place at 9:17 p.m. EDT (0117 GMT on May 7) from Launch Complex-40, marking the company’s 53rd Falcon 9 launch of 2025 and the 36th dedicated Starlink mission this year. The payload offers worldwide internet connectivity by adding to SpaceX’s swiftly expanding array of over 7,200 Starlink satellites in low Earth orbit.

As per a Space.com report, B1085, the reusable first-stage booster, executed a perfect main engine cut about 2.5 minutes after launch, then stage separation and a retrograde burn to stop its descent. Roughly eight minutes after launch, B1085 successfully landed on the autonomous drone ship, stationed in the Atlantic Ocean. The mission was the seventh flight for this particular booster, which had previously supported two other Starlink missions.

The Falcon 9‘s upper stage continued into orbit and deployed the 28 Starlink satellites roughly one hour after launch. These newly deployed units will spend several days adjusting their positions before integrating into the broader Starlink network, which now blankets most of the globe except the polar regions. Each satellite, compact but equipped with large solar arrays, forms part of the larger web responsible for delivering high-speed satellite internet.

The May 6 launch demonstrates how quickly SpaceX is moving to meet its broadband goals. In addition to Falcon 9 missions, the company has performed two Starship test flights this year to demonstrate development progress in both satellite launch and heavy-lift capability.

An expanding constellation would finally bring reliable internet coverage to remote locations around the world. The drive to offer a reliable internet connection to remote sites globally reflects a commitment to putting the world more in reach.

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Asteroid Vesta May Be a Fragment of a Lost Planet, Say Scientists

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May 9, 2025

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Asteroid Vesta May Be a Fragment of a Lost Planet, Say Scientists

Asteroid Vesta, long considered a stalled protoplanet, may actually be a massive fragment of a larger world that once existed in our solar system. New findings based on gravity-field mapping and spin-rate data suggest Vesta lacks the dense core typically found in differentiated planetary bodies. The discovery challenges previous assumptions, drawn from NASA’s Dawn mission in 2012, that classified Vesta as an embryonic planet. Now, scientists report that Vesta might have been ejected from a differentiated world in a massive collision 4.5 billion years ago, upending ideas about the development of planets and asteroids.

New Gravity Data Suggests Vesta Is Debris from a Destroyed Planet, Not a Protoplanet

As per a new study published in Nature Astronomy on April 23, 2025, Vesta does not quite match the former model. Refined calibration methods polished the radio Doppler signals, confirming the absence of a metal-rich core, which was inconsistent with earlier work. Seth Jacobson of Michigan State University, who led the research, stated the new interpretation marks a major shift in planetary science. While Vesta’s basaltic, volcanic surface still indicates geological activity, its internal uniformity contradicts the expectations of a body that once underwent full differentiation.

This paradox has caused scientists to reconsider the asteroid’s heritage. One scenario is that Vesta started to differentiate but never got very far. But data from meteorites called howardite-eucrite-diogenites (HEDs), thought to have come from Vesta, show no signs of such incomplete differentiation. Jacobson and his team instead favour the explanation that Vesta was formed from material blasted off a fully developed planet during an ancient planetary collision, which could also illustrate its volcanic surface without requiring it to have a dense core.

The results not only question Vesta’s identity but also suggest a possibility of a more general theory: that other asteroids could also be pieces of shattered planets. NASA’s Psyche and ESA’s Hera missions, planned for the next decades, intend to do such gravity investigations, which could ultimately confirm this new view. Jacobson noted that Vesta’s composition could even hint at a shared origin with Earth or other early planets, a hypothesis that may reshape asteroid science entirely.

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