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Indian Space Research Organisation (ISRO) will turn its focus on science experiments in 2023 with dedicated missions to the Sun — Aditya — and the moon — Chandrayaan-3 — even as the nascent start-up sector is set to soar in the space applications segment. The upcoming year will also witness a series of experiments on India’s maiden human space flight — the Gaganyaan project — with the first uncrewed mission expected in the last quarter of 2023 aimed at validating the performance of the human-rated launch vehicle, orbital module propulsion system and recovery operations.

ISRO further plans to conduct the first runway landing experiment (RLV-LEX) of the reusable launch vehicle early next year from Aeronautical Test Range in Karnataka’s Chitradurga, Union Minister of State in Prime Minister’s Office Jitendra Singh told Parliament this month.

Indian start-ups that marked their arrival with the sub-orbital flight by Skyroot Aerospace’s Vikram-S rocket, the first by a private sector company and the launch of Pixxel’s hyperspectral satellites Shakuntala, on SpaceX’s Falcon-9 rocket in April and Anand onboard ISRO’s PSLV in November.

Skyroot Aerospace, which launched India’s first privately developed rocket in November, plans to put a client satellite in orbit sometime next year, while Agnikul Cosmos, a start-up incubated on the IIT-Madras campus, has also lined up the test flight of its highly customisable Agnibaan rocket.

“We are developing six commercial hyperspectral imagery satellites which will be ready for launch next year,” Awais Ahmed, Pixxel co-founder and CEO, had told PTI.

Ahmed said many more rocket companies around the globe will see their first orbital launches come to fruition which will lead to a rocket-themed game of thrones as they vie for the same set of customers sending satellites into space.

The start-ups are eyeing the huge space applications market in the country, which was earlier the sole domain of ISRO, carving a niche for themselves in the earth imaging sector, developing rockets to launch small satellites, designing cheaper fuels for satellites and even planning to take tourists on a space journey.

“The potential for innovative space applications is immense, especially if established aerospace companies form partnerships with businesses that traditionally haven’t ventured into orbit, e.g. pharmaceutical, agriculture companies,” Chaitanya Dora Surapureddy, Chief Financial Officer, DhruvaSpace, told PTI.

DhruvaSpace had launched two satellites Thybolt 1 & 2 onboard ISRO’s PSLV C-54 mission that demonstrated the ability to conduct amateur satellite communication which will help ham radio operations.

Surapureddy said DhurvaSpace has already bagged its first commercial contract worth Rs 20 crore to build satellites.

“The number of space startups in India has already crossed 100 and these startups have raised funding of more than $245.35 million (roughly Rs. 2,000 crore),” Lt Gen A K Bhatt (retd.), Director General, Indian Space Association (ISpA) told PTI.

Agnikul also inaugurated its first launchpad and mission control centre at ISRO’s Satish Dhawan Space Centre at Sriharikota.

In 2022, the industry witnessed some major milestones with NewSpace India Limited (NSIL) authorising the space conglomerate formed by Larsen & Toubro (L&T) and Hindustan Aeronautics Limited a Rs. 860-crore contract for the commercial development of the next five Polar Satellite Launch Vehicles (PSLVs).

OneWeb also signed up the services of ISRO’s launch vehicle to put 36 satellites in low earth orbit from Sriharikota. A follow-up launch of another 36 satellites is expected next year.

The OneWeb contract for ISRO is learnt to be an outcome of some aggressive bidding by the Indians after the Ukraine conflict knocked off the Russian space launch capabilities off the market.

Chaitanya Giri, space consultant with Research and Information System for Developing Countries likens the aggression in the Indian space sector to the one displayed by Sourav Ganguly’s cricket team.

“Our earlier approach was like Mohammad Azharuddin-led cricket team – very mellow and gentlemanly. The newfound aggression is because of India’s rising geopolitical stature. Also, the Russian market has become a no go due to the Ukraine conflict. So is the Chinese market. Now, it is Advantage India,” Giri told PTI.

He said Indian start-ups should also vie for international contracts and not look at ISRO for business.

“ISRO is not an entity that will sustain business for them. Indian space start-ups, MSMEs and big corporates will have to strike business arrangements amongst each other. These B-2-B arrangements need to grow,” Giri said.


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Astronomers Discover 3I/ATLAS, Largest Interstellar Comet Yet Detected

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Astronomers Discover 3I/ATLAS, Largest Interstellar Comet Yet Detected

Astronomers have discovered the third interstellar comet to pass through our solar system. Named 3I/ATLAS (initially A11pl3Z), it was first spotted July 1 by the ATLAS telescope in Chile and confirmed the same day. Pre-discovery images show it in the sky as far back as mid-June. The object is racing toward the inner system at roughly 150,000 miles per hour on a near-straight trajectory, too fast for the Sun to capture. Estimates suggest its nucleus may be 10–20 km across. Now inside Jupiter’s orbit, 3I/ATLAS will swing closest to the Sun in October and should remain observable into late 2025.

Discovery and Classification

According to NASA, in early July the ATLAS survey telescope in Chile spotted a faint moving object first called A11pl3Z, and the IAU’s Minor Planet Center confirmed the next day that it was an interstellar visitor. The object was officially named 3I/ATLAS and noted as likely the largest interstellar body yet detected. At first it appeared to be an ordinary near-Earth asteroid, but precise orbit measurements showed it speeding at ~150,000 mph – far too fast for the Sun to capture. Astronomers estimate 3I/ATLAS spans roughly 10–20 km across. Signs of cometary activity – a faint coma and short tail – have emerged, earning it the additional comet designation C/2025 N1 (ATLAS).

Studying a Pristine Comet

3I/ATLAS was spotted well before its closest approach, giving astronomers time to prepare detailed observations. It will pass within about 1.4 AU of the Sun in late October. Importantly, researchers can study it while it is still a pristine frozen relic before solar heating alters it. As Pamela Gay notes, discovering the object on its inbound leg leaves “ample time” to analyze its trajectory. Astronomers are now racing to obtain spectra and images – as Chris Lintott warns, the comet will be “baked” by sunlight as it nears perihelion.

Determining its composition and activity is considered “a rare chance” to learn how planets form in other star systems. With new facilities like the Vera C. Rubin Observatory coming online, researchers expect more such visitors in the years ahead. 3I/ATLAS offers a rare chance to study material from another star system.

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NASA’s New Horizons Proves Deep-Space Navigation via Stellar Parallax



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NASA’s New Horizons Proves Deep-Space Navigation via Stellar Parallax

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NASA's New Horizons Proves Deep-Space Navigation via Stellar Parallax

NASA’s New Horizons spacecraft carried out an unprecedented deep-space star navigation test while 438 million miles from Earth. Using its long-range camera in April 2020, it captured images of Proxima Centauri and Wolf 359, which appeared slightly shifted in the sky compared to Earth’s view – a striking demonstration of stellar parallax. It was the first-ever demonstration of deep-space stellar navigation. By comparing these images to Earth-based observations and a 3D star chart, scientists calculated New Horizons’ position to within about 4.1 million miles, only about 26 inches across the United States.

Stellar Parallax Test

According to the paper describing the results, accepted for publication in The Astronomical Journal, New Horizons’ camera imaged Proxima Centauri (4.2 light-years away) and Wolf 359 (7.86 light-years) on April 23, 2020. From the spacecraft’s distant vantage point, the two stars appear in different positions than seen from Earth – the essence of stellar parallax. By comparing those images with Earth-based data and a three-dimensional map of nearby stars, the team worked out the probe’s location to within about 4.1 million miles.

As lead author Tod Lauer explained, “Taking simultaneous Earth/Spacecraft images we hoped would make the concept of stellar parallaxes instantly and vividly clear”. He added, “It’s one thing to know something, but another to say ‘Hey, look! This really works!’”.

New Horizons and Future Missions

New Horizons, the fifth spacecraft to leave Earth and reach interstellar space, flew past Pluto and its moon Charon in 2015, sending home the first close-up images of those distant icy worlds. Now on an extended mission, the probe is studying the heliosphere.

New Horizons’ principal investigator Alan Stern called the parallax test “a pioneering interstellar navigation demonstration” that shows a spacecraft can use onboard cameras “to find its way among the stars”, in a statement. He also noted it “could be highly useful for future deep space missions in the far reaches of the Solar System and in interstellar space”

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AI Designs Ocean Gliders Inspired by Sea Creatures to Boost Underwater Research Efficiency

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AI Designs Ocean Gliders Inspired by Sea Creatures to Boost Underwater Research Efficiency

Marine animals like fish and seals have long inspired ocean engineers due to their fluid, energy-efficient movements. Now, researchers are turning to these sea animals to create a new class of underwater gliders that requires very little energy, according to a team led by researchers from MIT’s Computer Science and Artificial Intelligence Laboratory (CSAIL) and the University of Wisconsin-Madison. They used artificial intelligence to design forms that slide through the water with less resistance, making long-term ocean exploration more efficient. These gliders, fabricated via 3D printing, promise better data collection on currents, salt levels, and climate impacts.

AI-Powered 3D Designs Create Energy-Efficient Underwater Gliders Inspired by Marine Life Forms

As per a study published on the arXiv preprint server, the team used machine learning to create and simulate numerous novel 3D glider shapes. By comparing traditional models—like submarines and sharks—with digitally altered versions, their algorithm learnt how different designs behaved at various “angles-of-attack.” A neural network then evaluated the lift-to-drag ratio of each shape, identifying those most likely to glide efficiently through water. These shapes were then fabricated using lightweight materials that minimised energy use.

In tests, two AI-generated prototypes—one shaped like a two-winged plane and the other like a four-finned flatfish—were built and tested both in wind tunnels and underwater. Key hardware was integrated with the gliders, including buoyancy control by a pump and a mass shifter to move the angle during displacements. The new gliders, with better shapes and lift-to-drag ratios, could travel farther on less power than traditional torpedo-shaped types.

The team added that what they are doing not only makes new types of designs possible but also reduces design times and cuts the cost since it doesn’t require physical prototyping. “This high degree of shape diversity hasn’t been investigated before,” Peter Yichen Chen, an MIT postdoc and co-lead author on the project, mentioned. He also noted that their AI pipeline allows testing forms that would be “very taxing” for humans to manually design.

The future plans are to produce slimmer and more manoeuvrable gliders and to improve the AI system with more configurable options. Intelligent bioinspired vehicles like these, the researchers say, will be essential in studying dynamic ocean environments that are changing quickly with the intensifying demands of industrial activity, ultimately offering more flexible and efficient ways for us to explore Earth’s last frontier.

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Hubble Observations Give Forgotten Globular Cluster Its Moment to Shine



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