NISAR Will Help Global Community Monitor Earth Changes: ISRO Chairman V Narayanan
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News18
20 minutes ago
- News18
Twin Meteor Showers To Light Up Skies On July 29–30: All You Need To Know
Last Updated: The Southern Delta Aquariids and Alpha Capricornids will peak together, with astronomers predicting at least 25 meteors per hour. As July 2025 draws to a close, sky watchers can look forward to a spectacular display featuring not one, but two meteor showers peaking simultaneously. On the night of July 29, 2025, extending into the early hours of July 30, 2025, the Southern Delta Aquariids and the Alpha Capricornids are expected to produce dozens of stunning meteors per hour. With the moon only 27 percent full, the meteors will be easily visible. This event will be observable worldwide, and the moonless night will ensure dark skies, increasing the likelihood of spotting bright shooting stars. The Southern Delta Aquariids and Alpha Capricornids will peak together, with astronomers predicting at least 25 meteors per hour. What Causes These Twin Meteor Showers? Meteor showers are typically caused by debris from comets or asteroids entering Earth's atmosphere. NASA explains that the Southern Delta Aquariids are produced by the comet 96P/Machholz, which passes the sun every five years. Comet 169P/NEAT, discovered in 2002, is responsible for the Alpha Capricornids meteor shower and orbits the Sun approximately every 4.2 years. Both meteor showers will reach their peak in the early morning of July 30, 2025, but will continue to be active until August 12, 2025. When and where to watch Though both hemispheres will get a glimpse, theview will be more clearer down South. The constellations Aquarius and Capricornus rise higher there. Early morning before sunrise offers the best views. City lights can spoil the show, better to go rural. You'll have to find a dark and open spot and look southward. You won't need binoculars, just patience and clear skies. There's a full week of activity around the peak night. The Southern Delta Aquariids remain strong until 31 July. So even if clouds roll in, all is not lost. view comments First Published: July 29, 2025, 08:10 IST Disclaimer: Comments reflect users' views, not News18's. Please keep discussions respectful and constructive. Abusive, defamatory, or illegal comments will be removed. News18 may disable any comment at its discretion. By posting, you agree to our Terms of Use and Privacy Policy.
Hans India
an hour ago
- Hans India
ISRO to launch NISAR sat tomorrow
Chennai: The highly anticipated NASA-ISRO Synthetic Aperture Radar (NISAR) satellite, a collaborative Earth observation mission between the United States and India, is slated for launch on July 30 at 5:40 pm IST. The 2,400-kg satellite will be carried into orbit by ISRO's Geosynchronous Satellite Launch Vehicle-F16 (GSLV-F16) from the Satish Dhawan Space Centre in Sriharikota, Andhra Pradesh. However, ISRO has clarified that while the launch is imminent, NISAR's dedicated scientific operations will not begin until approximately three months after it is successfully placed in orbit. This initial period will be critical for preparing the advanced observatory. According to ISRO, the NISAR mission is structured into distinct phases. Following the Launch Phase on July 30, the satellite will enter its Deployment Phase. This crucial stage involves the complex in-orbit unfurling of NISAR's 12-meter diameter reflector, a key component developed by NASA's Jet Propulsion Laboratory (JPL), which will extend 9 meters away from the satellite. Subsequently, the mission will enter a 90-day Commissioning Phase, also known as "In-Orbit Checkout (IOC)." This period is solely dedicated to meticulously preparing the observatory for its scientific tasks. It will involve initial checks and calibrations of the satellite's core systems, followed by a thorough engineering checkout of the payload and instruments by JPL. Only after the successful completion of this commissioning phase will the Science Operations Phase commence, extending for the duration of the mission's life. During this phase, NISAR's science orbit will be precisely maintained through regular maneuvers, strategically planned to minimize interference with scientific observations. Extensive calibration and validation (CalVal) activities will also be ongoing. The detailed observation plan for both the L-band and S-band instruments, along with all necessary engineering activities, are being meticulously generated prior to launch through continuous coordination between JPL and ISRO. NISAR is poised to be a groundbreaking mission, providing unprecedented, high-resolution, all-weather, day-and-night data to observe Earth's changing ecosystems, dynamic surfaces, and ice masses. This data is expected to revolutionize our understanding of natural hazards like earthquakes, tsunamis, volcanoes, and landslides, as well as providing critical information for studies on climate change, agriculture, and water resources.
Time of India
3 hours ago
- Time of India
Leopard spotted on DRDO's Pune laboratory campus, second time since 2022
1 2 Pune: Security guards at Research and Development Establishment (Engineers), a premier Defence Research and Development Organisation (DRDO) laboratory, spotted a leopard on its Alandi road campus early on Monday. As a precautionary measure, Research and Development Establishment (Engineers) officials issued a special advisory for personnel, including scientists, working at different facilities throughout the campus. This was the second time since 2022 that a leopard entered the approximately 100-acre campus of the laboratory engaged in the indigenous development of various engineering systems for all three wings of the Indian defence forces. The residential complex for Research and Development Establishment (Engineers) scientists and staffers is located outside the main gate on Pune-Alandi Road, separate from the lab's technical areas. You Can Also Check: Pune AQI | Weather in Pune | Bank Holidays in Pune | Public Holidays in Pune A senior official on Monday told TOI: "After confirming the security guards' alert about the leopard on the campus, we issued the advisory to ensure a safe environment. Work at the laboratory was slightly disrupted, as we told the scientists and personnel in areas near the rear gate not to report for duty. by Taboola by Taboola Sponsored Links Sponsored Links Promoted Links Promoted Links You May Like Write Better, Work Smarter With This Desktop App Grammarly Install Now Undo Their safety is a priority." The campus of the lab has significant greenery and is adjacent to large campuses of the Border Roads Organisation, General Reserve Engineering Force, and Training Battalion II of the Bombay Engineering Group and Centre. Additionally, forested areas of Charoli village are barely a few kilometres from the laboratory. Forest division (Pune) officials inspected the campus, but could not locate the leopard. Suresh Varak, range forest officer, Pune, told TOI: "We have set up two camera traps on the campus. We have requested the laboratory personnel to trim the grass that has grown on the campus." He said, "Despite the presence of an extensive network of CCTV cameras of Research and Development Establishment (Engineers), the leopard was yet to be captured on video. We suspect the leopard might have entered the campus a few days ago. Our personnel will review the CCTV camera footage for clues. So far, there is no recorded evidence." Forest officials suspect that the leopard might be wandering in the area because of the abundant greenery and hilly terrain surrounding the laboratory. In 2022, a thorough inspection of the campus was conducted after the leopard was spotted. However, the animal was not captured then. Officials suspected that the leopard might have strayed into the Research and Development Establishment (Engineers) campus in search of prey. "Stray dogs can be found both inside and outside the laboratory, making them easy targets for animals like leopards," an official said.
