Aditya L1 will be the first space-based Indian mission to study the Sun. As per the ISRO, the spacecraft shall be placed in a halo orbit around the Lagrange point 1 (L1) of the Sun-Earth system, which is about 1.5 million km from the Earth.
Aditya-L1 –First Space-Based Indian Observatory To Study The Sun
Why In The News
- The ISRO Is All Set To Launch The Latest Spacecraft After The Successful Landing Of Chandrayaan 3. ISRO Is Going To Launch Aditya L1 Mission Which Is The 1st Solar Mission By ISRO. As Per Details Available With Us, Aditya L-1 Launch Date Is 2nd September 2023 From Sriharikota.
- The Aditya L1 Mission 2023 Is Announced By The Indian Space & Research Organization As Per Which This Spacecraft Will Carry The Payload Till Lagrangian Point And It Will Read The Behavior Of Sun.
Why Studying Sun Is Important
- The Sun Is A Made Of Super-Hot Ionized Gas – Plasma. The Sun’s Atmosphere Change Continually, Driven By The Magnetic Forces. We Study The Sun To Understand Ever-changing Conditions Can Influence Earth, Radiations Which Are Emitted By The Sun But They Do Not Reach The Earth’s Surface.
Why Name Aditya
- Aditya L1 (Sanskrit: आदित्य, Lit: Sun). Aditya-L1, Named After The Sun’s Core, Aims To Provide Unprecedented Insights Into The Sun’s Behavior By Placing Itself In A Halo Orbit Around The Lagrange Point 1 (L1) Of The Sun-earth System, Approximately 1.5 Million Kilometers From Earth.
Aditya L1 Mission Budget
- Budget Of 3 Crore INR Was Allocated Previously when it was only for studying corona. But Now ISRO Aditya L1 Mission Budget is Rs 400 Crore and ISRO Started working on Aditya L1 from December 2019.
What Is Lagrange Point
- It Is A Position In Space Where “The Gravitational Pull Of Two Large Masses Precisely Equals The Centripetal Force Required For A Small Object To Move With Them”. Basically, An Object Placed At This Point Will Effectively Stay In The Same Relative Position While Moving.
- Lagrange Points Named After Italian-French Mathematician Josephy-Louis Lagrange & There Are 5 Points L1, L2, L3, L4 & L5. According To NASA, “The L1 Point Of The Earth-sun System Affords An Uninterrupted View Of The Sun And Is Currently Home To The Solar And Heliospheric Observatory Satellite SOHO.”
History
- Aditya Was Conceptualized In January 2008 By The Advisory Committee For Space Research. It Was Initially Envisaged As A Small 400 Kg, LEO(800 Km) Satellite With A Coronagraph To Study The Solar Corona. An Experimental Budget Of 3 Crore INR Was Allocated For The Financial Year 2016–2017.
- The Scope Of The Mission Has Since Been Expanded & Now Planned To Be A Comprehensive Solar And Space Environment Observatory To Be Placed At The Lagrange Point L1. The Mission Was Renamed “Aditya-L1”. As Of July 2019, The Mission Has An Allocated Cost Of ₹378.53 Crore Excluding Launch Costs.
Objectives Of Aditya L1
- Observe The Photosphere (The Deepest Layer Of The Sun), Chromosphere (The Layer About 400 Km And 2,100 Km Above The Photosphere), & Corona (The Outermost Layers Of The Sun), Using Electromagnetic And Particle And Magnetic Field Detectors.
- The Suits Of Aditya L1 Payloads Are Expected To Provide Most Crucial Informations To Understand The Problem Of Coronal Heating, Coronal Mass Ejection, Pre-flare And Flare Activities And Their Characteristics, Dynamics Of Space Weather, Propagation Of Particle And Fields Etc.
Payloads Aditya-L1 Mission Will Carry
- Visible Emission Line Coronagraph– Corona/Imaging, Solar Ultraviolet Imaging Telescope– Photosphere And Chromosphere Imaging, Solar Low Energy X-ray Spectrometer- Which Is A Soft X-ray Spectrometer For Sun, High Energy L1 Orbiting X-ray Spectrometer- Hard X-ray Spectrometer For Sun.
- Aditya Solar Wind Particle Experiment– Solar Wind/Particle Analyzer Protons And Heavier Ions, Plasma Analyzer Package For Aditya- Solar Wind/Particle Analyzer Electrons & Advanced Tri-axial High Resolution Digital Magnetometers For In Situ Magnetic Field Study.
Aditya L1 Launch Vehicle
The Aditya L1 Launch Vehicle Is PSLV-XL And It Will Carry The Spacecraft In Space. The Launch Site Is Sriharikota. Aditya L-1 Is 2nd Consecutive Mission Of ISRO After The Launch Of Chandrayaan 3.
Other Solar Mission
- Active Solar Missions By NASA- Advanced Composition Explorer Launched In August-1997, Solar Terrestrial Relations Observatory In October, 2006, Solar Dynamics Observatory In February, 2010, & Interface Region Imaging Spectrograph Launched In June, 2013
- In 2006, HINODE (SOLAR-B) Was Launched, Which Was The Successor To Yohkoh (SOLAR-A), The Orbiting Solar Observatory By Japan, Launched In Collaboration With The U.S. And The U.K.
Future Solar Mission
- Launching In 2024, ESA’s Proba-3 Consists Of Two Spacecraft That Will Fly In Formation To Create A Coronagraph That Will Study The Inner Layers Of The Sun’s Atmosphere.
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