ISRO signs MoU with NIOT for submersible spherical vessel MATSYA-6000
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Indian Express
24 minutes ago
- Indian Express
NASA-ISRO joint satellite NISAR set to be launched on July 30: All you need to know
An earth observation satellite NISAR, jointly developed by NASA and ISRO, is set to be launched on July 30 at 5.40 pm from the country's only spaceport in Sriharikota, Andhra Pradesh. Weighing 2,392 kg, NISAR — which stands for NASA-ISRO Synthetic Aperture Radar — is a one-of-its kind earth observation satellite and will be the first one ever to observe the Earth in two frequencies — NASA's L-band and ISRO's S-band. 'Each system's signal is sensitive to different sizes of features on Earth's surface, and each specialises in measuring different attributes, such as moisture content, surface roughness, and motion,' said NASA. Putting two radar systems on a single satellite is a unique engineering feat because the two systems require different sets of hardware, and yet have to function in a complementary fashion without interfering with one another. Costing around USD 1.5 billion, it is the most expensive earth observation satellite in the world, with ISRO contributing Rs 469.4 crores for the satellite. The satellite will be launched on the GSLV-F16 and be put in a 734 km sun synchronous orbit — an orbit in which the satellite reaches over a place at the same time each day. The satellite will scan the entire globe every 12 days, proving a series of very detailed images of the Earth's surface. NISAR will provide an unprecedented view of the planet. With two radar systems in place, the satellite would be able to provide very high-resolution data, in all types of weather conditions, and both during the day and the night. The satellite is powerful enough to capture changes as small as one centimetre in size during its repeated observations over the same terrain. It will therefore be able to study the dynamic processes happening on Earth's surface, like retreat of glaciers, movement of sea ice, the path of a storm, changes in vegetation and forest cover, and even the movements during earthquakes and volcanoes. Scientists expect this satellite to provide new insights into our understandings of processes like climate change or natural hazards and better prepare for them. It can also help with practical applications such as tracking the changes in soil moisture or mapping surface water levels. 'The satellite will benefit India, the US and the entire world… it is also crucial for monitoring earth's natural resources,' ISRO chairman V Narayanan added. There have been several delays in NISAR's launch, with the last year's scheduled launch getting postponed after technical issues. There was a need to fix the one of the key components of the satellite — a 12-metre unfurlable antennae — for which the satellite was shipped back to the United States.
Time of India
37 minutes ago
- Time of India
Isro-Nasa Earth observation satellite to be launched on July 30
Isro-Nasa Earth observation satellite to be launched on July 30 CHENNAI: The Indian space research organisation (Isro) is gearing up for a series of exciting missions. According to the organisation's chief, Dr V Narayanan, Isro will launch the Nasa-Isro Synthetic aperture radar (NISAR) satellite on July 30 using the GSLV-F16 rocket . This satellite will scan the entire globe every 12 days, providing high-resolution, day-and-night, all-weather imagery across a 242 km swath. NISAR aims to support climate change research, disaster response, and Earth science studies. "We are going to launch the Nasa-Isro Synthetic aperture radar (NISAR) satellite through the GSLV-S16 rocket by July 30th," said the Isro chief. Nisar features Nasa's L-band and Isro's S-band radar, enabling it to track surface changes with centimeter-level precision. The satellite will systematically map Earth's surface, monitoring dynamic processes like glacier retreat, vegetation changes, and earthquakes. NISAR will deliver high-resolution data crucial for monitoring natural disasters, environmental degradation, and infrastructure stress. Narayanan also provided an update on the Gaganyaan Mission, which aims to send Indian astronauts into space. Before the crewed mission, Isro will conduct three uncrewed missions, including the Humanoid Mission. In December, a robot called Vyommitra will be sent into space to test the systems. Two uncrewed missions: If the humanoid mission is successful, two more uncrewed missions will be launched next year. Following the completion of all tests, the Gaganyaan Mission is scheduled to launch in March 2027. "We will conduct three uncrewed missions before the Gaganyaan mission. In December, a humanoid mission will be conducted, during which a robot called Vyommitra will be sent into space. If it's successful, then two uncrewed missions will be launched next year. After all the tests in March 2027, as PM Modi said, Gaganyan Mission will be launched," added the Isro chief. Vyommitra is a name derived from two Sanskrit words: "Vyoma" (meaning "space") and "Mitra" (meaning "friend"). This female robot astronaut is equipped with the capability to monitor module parameters, issue alerts, and execute life support operations. It can perform tasks such as operating six panels and responding to queries. These missions demonstrate India's growing capabilities in space exploration and technology, with Isro playing a vital role in advancing the nation's vision of self-reliance and global leadership in space.
India Today
2 hours ago
- India Today
Indian scientists decode mysterious signal pattern coming from deep space
India's space observatory AstroSat has uncovered new clues about the mysterious behaviour of a distant black hole, GRS 1915+105, revealing how it flickers in X-rays with remarkable 28,000 light-years away in our Milky Way galaxy, this black hole system is helping scientists decode the extreme environment near one of the universe's most powerful its launch in 2015, AstroSat — India's first dedicated multi-wavelength space telescope — has been continuously monitoring GRS 1915+105. A team of Indian scientists from ISRO, IIT Guwahati, and the University of Haifa used two of its onboard instruments, the Large Area X-ray Proportional Counter (LAXPC) and the Soft X-ray Telescope (SXT), to study the black hole's mysterious signal They found a repeating pattern: a few hundred seconds of dim X-ray light, followed by a similar period of bright light. During the brighter phases, they discovered something remarkable — fast X-ray flickers occurring 70 times per second, known as Quasi-periodic Oscillations (QPOs). These flickers vanished during the dimmer team traced this rapid flickering to the corona, a superheated cloud of plasma surrounding the black hole. During the bright phases, the corona becomes smaller and hotter, generating strong the dim phases, it cools and expands, causing the flickers to black hole is part of a binary system, pulling matter from a companion star into a hot spinning disc. As this matter heats up, it emits X-rays — the signals that AstroSat study, published in the Monthly Notices of the Royal Astronomical Society, provides scientists with a deeper insight into black hole findings showcase India's growing capabilities in space-based astronomy and the powerful role of AstroSat as a cosmic observatory.- EndsTrending Reel
