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Achieving a major milestone, ISRO on Thursday announced that the Chandrayaan-3 spacecraft’s Lander Module has successfully separated from the Propulsion module that was propelling it all these days in space.

The Lander Module comprising the lander (Vikram) and the rover (Pragyan) is now ready to be lowered into an orbit that takes it closer to the Moon’s surface. The soft landing on the Lunar south pole is scheduled on August 23.

“Thanks for the ride, mate! said the Lander Module (LM). LM is successfully separated from the Propulsion Module (PM). LM is set to descend to a slightly lower orbit upon a deboosting planned for tomorrow around 1600 Hrs., IST,” ISRO said in a post on X (formerly Twitter).

After Thursday’s separation, the lander is expected to undergo a “deboost” (the process of slowing down) to place it in an orbit, where the Perilune (the orbit’s closest point to the Moon) is 30 kilometres and Apolune (farthest point from the Moon) is 100 km, from where the soft landing on the south polar region of the Moon will be attempted, ISRO sources said.

Meanwhile, the Propulsion Module will continue its journey in the current orbit for months/years, the country’s space agency said.

“The SHAPE (Spectro-polarimetry of Habitable Planet Earth) payload onboard it (Propulsion Module) would perform spectroscopic study of the Earth’s atmosphere and measure the variations in polarization from the clouds on Earth – to accumulate signatures of Exoplanets that would qualify for our habitability!” ISRO said, adding that this payload is shaped by its U R Rao Satellite Centre in Bengaluru.

Post its launch on July 14, Chandrayaan-3 entered into the lunar orbit on August 5, following which orbit reduction maneuvers were carried out on the satellite on August 6, 9, 14 and 16, ahead of separation of both its modules today, in the runup to the landing on August 23.

ISRO Chairman S Somanath had recently said the most critical part of the landing is the process of bringing the velocity of the lander from 30 km height to the final landing, and that the ability to transfer the spacecraft from horizontal to vertical direction is the “trick we have to play” here.

“The velocity at the starting of the landing process is almost 1.68 km per second, but this speed is horizontal to the surface of the moon. The Chandrayaan-3 here is tilted almost 90 degrees, it has to become vertical. So, this whole process of turning from horizontal to vertical is a very interesting calculation mathematically. We have done a lot of simulations. It is here where we had the problem last time (Chandrayaan-2),” Somanath explained.

Earlier, over five moves in the three weeks since the July 14 launch, ISRO had lifted the Chandrayaan-3 spacecraft into orbits farther and farther away from the Earth.

Then, on August 1 in a key maneuver — a slingshot move — the spacecraft was sent successfully towards the Moon from Earth’s orbit. Following this trans-lunar injection, the Chandrayaan-3 spacecraft escaped from orbiting the Earth and began following a path that would take it to the vicinity of the moon.

“It is a great moment and this will imply how the lander if performing and the lander will be verified and tested and brought closer and closer to the moon…Then it will be given the required commands such that it takes over on the cue on August 23 to go all the way to the targeted place and have a safe and secure landing,” Chandryaan-1 Project Director M Annadurai told PTI.

“This is the beginning and all further milestones have to be seen very carefully. We have crossed major milestones from the launch vehicle and after that the propulsion system (separation) Now really the match starts. These are the final overs we are talking about. I think it is a great moment. The whole world is waiting to see what Vikram will do and What Pragyan will come out and do… I am also enthusiastically waiting,” Annadurai added.

Chandrayaan-3 is a follow-on mission to Chandrayaan-2 to demonstrate end-to-end capability in safe landing and roving on the lunar surface.

The mission objectives of Chandrayaan-3 are to demonstrate a safe and soft landing on the lunar surface, to demonstrate rover roving on the Moon, and to conduct in-situ scientific experiments.

The lander has the capability to soft land at a specified lunar site and deploys the rover that will carry out in-situ chemical analysis of the Moon’s surface during the course of its mobility.

The lander and the rover have scientific payloads to carry out experiments on the lunar surface.


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NASA’s X-59 Moves Closer to First Flight with Advanced Taxi Tests and Augmented Vision

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NASA’s X-59 Moves Closer to First Flight with Advanced Taxi Tests and Augmented Vision

X-59 of NASA has been designed from the ground to fly at a faster speed of sound without making thunderous sonic booms, which are usually associated with supersonic flight. This 99-foot aircraft, which features a logically elongated design, jettisons the front windscreen and is now heading towards the runway. Pilots can see what is at the front through an augmented reality (AR) enabled closed-circuit camera system, which is termed by NASA as the External Vision System (XVS). NASA took control of an experimental aircraft and performed taxi tests on it during this month.

X-59’s Futuristic Design: Eliminating Sonic Booms with External Vision System

According to As per NASA, the test pilot Nils Larson, during the test, drove the X-59 at the runway by keeping a low speed. This is done to ensure the working of the steering and braking systems of the jet. Lockheed Martina and NASA would perform the taxi tests at high speed, in which the X-59 will move faster to make it to the speed at which it will go for takeoff.

Taxi tests are held at the U.S. Air Force’s Plant 42 facility in Palmdale, California. The contractors and the Air Force utilise the plant for manufacturing and testing the aircraft. Lockheed Martin has developed this aircraft, whose Skunk Works is found in Plant 42.

Taxi Tests at Plant 42: NASA and Lockheed Martin Prepare X-59 for First Flight

Some advanced aircraft of the U.S. military were developed to a certain extent at Plant 42, together with the B-2 Spirit, the F-22 Raptor, and the uncrewed RQ-170 Sentinel spy drone.

SOFIA airborne observatory aircraft, which is a flying telescope called Plant 42, home recently retired. The space shuttle of the agency is the world’s first reusable spacecraft; these were assembled and tested at the facility.

Such taxi tests have started over the last months. NASA worked in collaboration with the Japan Aerospace Exploration Agency for testing a scale model of the X-59 in the supersonic wind tunnel to measure the noise created under the aircraft.

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Unusual Plasma Waves Above Jupiter’s North Pole Can Possibly Be Explained

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Unusual Plasma Waves Above Jupiter’s North Pole Can Possibly Be Explained

In recent observations, NASA’s Juno spacecraft has significantly detected the presence of a variety of plasma waves. The emergence of these waves on Jupiter’s powerful magnetic field is projected to be surprising, as their existence was never marked in the planetary magnetospheres. However, scientists might have come out with an explanation. Furthermore, the current studies have been questioned by scientists surfacing the activity at the North Pole. The article below will exemplify the findings and shed light on the plasmas. 

Uncovering Mystery at Jupiter’s North Pole 

According to a paper published in the Physical Review Letters, the scientists have uncovered the explanation behind the presence of these strange waves. They mainly suspect that the formation of these waves lies behind their evolution as a plasma, which later transforms into something different. 

Inside Jupiter’s Plasmas and Their Variants 

Plasmas are best referred to as the waves that pass through the amalgamation of the charged particles in the planet’s magnetosphere.These plasma waves come across in two forms: One, Langmuir waves, which are high-pitched lights crafted with electrons, while the other, Alfven waves, are slower, formed by ions (heavy particles). 

About Juno’s Findings

As unveiled by the Juno, the findings turned out to be questionable after the scientists noted that in Jupiter’s far northern region, the plasma waves were relatively slower. The magnetic field is about 40 times stronger than the Earth’s, but scientists were shocked to witness the results as the waves were slower. To analyse this further, a team from the University of Minnesota, led by Robert Lysak, identified the possibility of Alfven waves transforming into Langmuir waves. Post studying the data extracted from the Juno, the researchers then began to compare the relationship between the plasma wave frequency and number. 

According to Lysak’s research team, near Jupiter’s north pole, there might be a potential pathway of Alfven waves, which are massive in numbers, transforming into Langmuir waves. Scientists are also predicting that the reason behind evolution might be strong electrons that are shooting upwards at a very high energy. This discovery was made in the year 2016. Considering the current findings, the researchers indicate that Jupiter’s magnetosphere may comprise a new type of plasma wave mode that occurs during high magnetic field strength. 

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Russia Expands Space Weather Network, Launches Iran’s Nahid-2 in Joint Mission

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Russia Expands Space Weather Network, Launches Iran’s Nahid-2 in Joint Mission

Russia sent two new Ionosfera-M satellites into orbit on a Soyuz-2 on July 25, 2025. Rocket 1b from the Vostochny Cosmodrome in Siberia. The mission also placed Iran’s Nahid-2 communications satellite in orbit. These satellites will complement a four-satellite constellation aimed at keeping track of Earth’s upper atmosphere and space weather conditions, particularly the solar wind that can knock satellites and communications systems offline. The flight indicates Russia’s scientific ambitions and collaboration with Iran’s space program, showing Russia’s function in launching Tehran’s orbital assets. Both countries gain from the collaborative mission.

Russian Space Weather Satellites

According to official sources, Russia’s new Ionosfera-M probes, 3 and 4, follow two identical satellites launched in November 2024. Together the four craft form a mini-constellation orbiting about 820 kilometers above Earth. The network is explicitly designed to study space weather in the ionosphere, the charged upper atmosphere.

It will track solar wind and related phenomena that can disturb communications and navigation systems. The latest pair is being inserted into an orbital plane perpendicular to the first two, greatly expanding three-dimensional coverage of near-Earth space. They also carry a new Ozonometr-TM instrument to measure upper-atmosphere ozone for the first time in this mission.

Iranian Payload and International Implications

An Iranian communications satellite, Nahid-2, was also aboard the Soyuz mission.Nahid-2 is intended to bolster Iran’s civilian communications in space, an important capability given Iran’s limited homegrown launch capabilities. Russia’s role in the delivery of the payload reflects cooperation between the countries in space technology.

With the help of Russia, Iran can continue its satellite building efforts, even though these are restricted by the international community from also involving rocket export limitations. That Moscow has such a product even while Iran is under sanctions underscores the depth of their two-nation space partnership. This mission represents Russia’s support for ally’s space aspirations and the broader geopolitical implications of such collaborative efforts.

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