ISRO has planned to launch its solar mission Aditya-L1 23/07/2019 – Posted in: Daily News
ISRO’S SOLAR MISSION ADITYA-L1
For: Preliminary & Mains
Topics covered: Sun/ Solar mission Aditya L1 mission, Highlights, Significance
News Flash
After Chandrayaan-2, the Indian Space Research Organisation (ISRO) has planned to launch its solar mission (Sun mission), Aditya-L1, during the first half of 2020.
ISRO’s solar mission Aditya-L1 is meant to observe the Sun’s corona, which are the outer layers of the star that span thousands of kilometres.
How the corona gets heated to such high temperatures is still an unanswered question in solar physics.
Aditya L1
- Aditya-L1 is meant to observe the Sun’s corona.
- Corona is the outer layers of the star that span thousands of kilometres.
- Aditya-L1, with additional experiments, can provide observations of the Sun’s photosphere, chromosphere and corona.
- Particle payloads will study the particle flux emanating from the Sun.
- These payloads have to be placed outside the interference of the Earth’s magnetic field and cannot be useful in the low-earth orbit.
Background
- The Aditya-1 mission was conceived as a 400kg class satellite carrying one payload, the Visible Emission Line Coronagraph (VELC) and was planned to launch in a 800 km low earth orbit.
- A Satellite placed in the halo orbit around the Lagrangian point 1 (L1) of the Sun-Earth system has the major advantage of continuously viewing the Sun without any occultation/ eclipses.
- Therefore, the Aditya-1 mission has now been revised to “Aditya-L1 mission” and will be inserted in a halo orbit around the L1, which is 1.5 million km from the Earth.
- The project is approved and the satellite will be launched during 2019 – 2020 timeframe by PSLV-XL from Sriharikota.
- Aditya-L1 with additional experiments can now provide observations of Sun’s Photosphere (soft and hard X-ray), Chromosphere (UV) and corona (Visible and NIR).
New Mission
Another interplanetary mission to Venus will be launched in the next 2-3 years.
Source: The Hindu
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