27/07/2024

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how The Aditya-L1 Mission: Unveiling the Sun's Mysteries

How Aditya-L1 Mission: Unveiling the Sun’s Mysteries 2023

Rishu04 mins

Aditya-L1, a pioneering mission, will be launched using the Polar Satellite Launch Vehicle (PSLV) with seven carefully selected payloads (instruments) on board. These payloads include the following: 1.VELC (Visible Emission Line Coronagraph) 2.Solar Ultraviolet Imaging Telescope (SUIT) 3.Solar Low Energy X-ray Spectrometer (SoLEXS) 4.Aditya Solar wind Particle Experiment (ASPEX) 5.High Energy L1 Orbiting X-ray Spectrometer (HEL1OS) 6.Plasma Analyzer Package for Aditya (PAPA) 7.Advanced Tri-axial High-Resolution Digital Magnetometers The primary objective of the Aditya-L1 mission is to study various aspects of the Sun, including its corona, photosphere, chromosphere, solar emissions, solar winds, flares, and Coronal Mass Ejections (CMEs). It will carry out continuous imaging of the Sun, providing invaluable insights into our star’s behavior. To accomplish this, ISRO plans to launch Aditya-L1 into the L1 orbit, situated approximately 1.5 million km from Earth. This orbit allows the spacecraft to maintain uninterrupted observations of the Sun. But what exactly is L1? L1, short for Lagrangian/Lagrange Point 1, is one of five points in the orbital plane of the Earth-Sun system. These Lagrange Points are positions in space where the gravitational forces of two celestial bodies, like the Sun and Earth, create regions of enhanced attraction and repulsion. Spacecraft strategically positioned at these points can significantly reduce fuel consumption required to stay in position. Notably, the L1 point is also home to the Solar and Helio spheric Observatory Satellite (SOHO), a collaborative project between NASA and the European Space Agency (ESA). One of the most critical payloads aboard Aditya-L1 is VELC (Visible Emission Line Coronagraph). This precision instrument, developed in India over 15 years, will play a pivotal role in unraveling the mysteries of solar astrophysics. VELC will facilitate studies on the temperature, velocity, and density of the corona, aiding our understanding of processes leading to corona heating, solar wind acceleration, space weather drivers, magnetic field analysis, as well as the cause of coronal mass ejections. Aditya-L1 is not the only mission aimed at exploring the Sun. NASA’s Parker Solar Probe, part of the ‘Living with a Star’ program, is tracing energy and heat movement in the Sun’s corona and studying solar wind acceleration. The earlier Helios 2 Solar Probe ventured within 43 million km of the Sun’s surface in 1976. Solar Orbiter, a joint ESA-NASA mission, seeks to collect vital data on the Sun’s role in shaping the solar system’s space environment. Several other active spacecraft, including the Advanced Composition Explorer (ACE), Interface Region Imaging Spectrograph (IRIS), WIND, Hinode, the Solar Dynamics Observatory, and Solar Terrestrial Relations Observatory (STEREO), continue to monitor the Sun, contributing to our ever-growing knowledge of our star and its influence on our planet.

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chandrayan-3

Chandrayan-3

Rishu03 mins

Like Chandrayaan-2, Chandrayaan-3’s lander and rover have the names Vikram and Pragyan, respectively. If the lander is called Vikram, the rover that will emerge from it once it touches down on the moon’s surface is called Pragyan. The name of the mission has been repeated for Chandrayaan-3 because the previous mission’s attempt to operate on the moon’s surface failed. The Chandrayaan-3 mission’s primary goal is to thoroughly investigate the Moon’s southern pole and surface. Scientists claim that there is a substantial amount of water ice and a lot of sunshine in this area of the Moon.It is anticipated that research into this area will one day be useful for Mars expeditions. The fact that Chandrayaan-3 was the first spacecraft to land on the southern pole of the Moon is another notable feature of this mission. A lander Vikram and how it works The Vikram lander will start its activities following a gentle touchdown. It will give ISRO (Indian Space Research Organisation) its first photograph a short while after landing. As long as it is on the Moon’s surface, it will function. Activities of the rover:- After around three hours, the rover, called Pragyan, will leave the lander. Numerous moon-related research endeavors will be facilitated by the lander. After a successful soft landing, the lander Vikram will carry out activities on the Moon’s surface and return data and photographs to ISRO. Later, the lander’s internal rover, named Pragyan, will emerge and conduct moon-related scientific investigations. The Pragyan rover’s duties:- The solar-powered rover Pragyan will be sent onto the Moon’s surface by the lander Vikram. This six-wheeled rover will travel at a pace of one centimeter per second across a distance of around 500 meters. On the lunar surface, the rover will do chemical analysis and send the results back to the lander. The ISRO space station will thereafter get this information from the lander. On the Moon, the Pragyan rover will continue to operate for around 14 days, which is equal to one lunar day or 14 days on Earth.

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