India’s solar mission, Aditya-L1 successfully launched from the Satish Dhawan Space Centre in Sriharikota, Andhra Pradesh at 11:50 am. The mission aims to reach its destination in 125 days.
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#AdityaL1Launch #AdityaL1 #AdityaL1Mission #ISRO #AdityaL1LiftsOff #AdityaL1LaunchVideo
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00:00 India's solar mission Aditya L1 successfully launched from the Satish Dhawan Space Centre
00:11 in Sriharikota, Andhra Pradesh at 11.50 am.
00:15 The mission aims to reach its destination in 125 days.
00:19 After the successful launch of the Chandrayaan-3 mission, the world has its eyes set on the
00:24 Aditya L1 launch.
00:26 Approximately 63 minutes after liftoff, the satellite separation is expected to take place
00:32 as the PSLV will launch the Aditya L1 spacecraft into a highly eccentric Earth-bound orbit
00:38 at around 11.53 pm.
00:41 Following the launch, Aditya L1 will stay in Earth-bound orbits for 16 days, during
00:46 which it will undergo five manoeuvres to gain the necessary velocity for its journey.
00:51 With the successful launch of the Aditya L1 mission, the PSLV rocket carrying the Aditya
00:56 L1 has embarked on a 1.5 million kilometre journey to a hallow orbit around the Sun.
01:01 The spacecraft is expected to be placed in a hallow orbit around the Lagrangian point
01:05 L1, which is considered closest to the Sun.
01:09 The major objectives of the mission include understanding the coronal heating and solar
01:13 wind acceleration, the initiation of coronal mass ejection, and near-Earth space weather
01:18 and the solar wind distribution.
01:20 The Aditya L1 mission carries seven scientific payloads to carry out the study.
01:24 Four of the payloads will observe the light from the Sun and the remaining three will
01:27 measure in-situ parameters of the plasma and magnetic fields.
01:31 Aditya L1's trajectory towards the Sun will be a complex one and will involve several
01:35 phases.
01:36 The path is not straight and will include a lot of twists.
01:39 After being launched, Aditya L1 will be placed in a low-Earth orbit, which will be circular.
01:44 This stage is known as the Earth-Centred Orbit Transfer.
01:46 Aditya L1 will perform three Earth-bound orbit-raising manoeuvres, or perigee burns, to ensure that
01:52 after each step, the orbit becomes more elliptical.
01:55 The spacecraft will be propelled towards the L1 point using on-board propulsion.
02:00 As the spacecraft moves towards the Lagrange point, it will exit Earth's gravitational
02:04 sphere of influence.
02:06 After leaving Earth's SOI, the cruise phase of the mission will commence.
02:10 Subsequently, the spacecraft will be injected into a large, hallow orbit around the Lagrange
02:14 point L1.
02:15 After Aditya L1 inserts itself into the hallow orbit L1 and stabilizes itself, the spacecraft
02:21 will start orbiting L1.
02:23 This is a special point where the gravitational pulls from the Earth and the Sun balance each
02:26 other out, as a result of which Aditya L1 will simply hover around L1.
02:31 Once the spacecraft gets to this Lagrange point, it will not just stop.
02:35 It is like a slow and graceful dance around that point.
02:38 But here is the catch.
02:39 There is no physical object there, like a planet or moon.
02:42 Instead, the spacecraft moves because of the tugging from the Sun's gravity and Earth's
02:47 gravity.
02:48 Aditya L1's primary scientific objectives encompass the examination of solar upper atmospheric
02:51 dynamics, including chromosphere and corona, investigation of chromospheric and coronal
02:55 heating, plasma physics, coronal mass ejections, flares, and the analysis of in-situ particle
03:00 and plasma surroundings, contributing data for comprehending particle dynamics originating
03:04 from the Sun.
03:05 The instruments aboard Aditya L1 are finely tuned to observe the solar atmosphere, particularly
03:10 the chromosphere and corona, while in-situ instruments will gather data about the local
03:14 environment at the L1 point.
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