Aditya-L1 Launch Live Updates: ISRO Says Solar Panels Deployed, Orbit Raising On Sept 3; PM Congratulates

Aditya-L1 has started generating power after it deployed its solar panels, ISRO announced. The first Earth-bound firing to raise the orbit is scheduled for Sept. 3 around 11:45 am IST.

Aditya-L1 spacecraft successfully separated from PSLV rocket, announced ISRO.

Aditya-L1 spacecraft successfully separated from PSLV rocket, announced ISRO.

Aditya L1, India's maiden solar mission, launched from Satish Dhawan Space Centre (SDSC) SHAR in Sriharikota, Andhra Pradesh.

Aditya L1, India's maiden solar mission, launched from Satish Dhawan Space Centre (SDSC) SHAR in Sriharikota, Andhra Pradesh.

Aditya L1, India's maiden solar mission, launched from Satish Dhawan Space Centre (SDSC) SHAR in Sriharikota, Andhra Pradesh.

Aditya L1, India's maiden solar mission, launched from Satish Dhawan Space Centre (SDSC) SHAR in Sriharikota, Andhra Pradesh.

Senior ISRO scientists as well as Union Minister Jitendra Singh and thousands of spectators have gathered to witness the launch.

Senior ISRO scientists as well as Union Minister Jitendra Singh and thousands of spectators have gathered to witness the launch.

Senior ISRO scientists as well as Union Minister Jitendra Singh and thousands of spectators have gathered to witness the launch.

Senior ISRO scientists as well as Union Minister Jitendra Singh and thousands of spectators have gathered to witness the launch.

Senior ISRO scientists as well as Union Minister Jitendra Singh and thousands of spectators have gathered to witness the launch.

Senior ISRO scientists as well as Union Minister Jitendra Singh and thousands of spectators have gathered to witness the launch.

Senior ISRO scientists as well as Union Minister Jitendra Singh and thousands of spectators have gathered to witness the launch.

Senior ISRO scientists as well as Union Minister Jitendra Singh and thousands of spectators have gathered to witness the launch.

The distance of 1.5 million km to L1 point will be covered in nearly four months (125 days).

The distance of 1.5 million km to L1 point will be covered in nearly four months (125 days).

Aditya-L1 will be the first space-based Indian mission to study the Sun. The mission is scheduled to be launched at 11:50 a.m. from the Sriharikota spaceport in Andhra Pradesh.

The Visible Emission Line Coronagraph (VELC), the primary payload of Aditya L1 will be sending 1,440 images per day to the ground station for analysis on reaching the intended orbit, according to its key scientist.

"From the continuum channel, which is the imaging channel, an image will come -- one image per minute. So approximately 1,440 images for 24 hours, we will be receiving at the ground station," Aditya L1 Project Scientist and Operation Manager for VELC Dr Muthu Priyal said, reported PTI.

IIA will host the VELC Payload Operations Centre (POC), which will receive raw data from ISRO's Indian Space Science Data Centre (ISSDC), process them further to make it suitable for scientific analysis, and send it back to ISSDC for dissemination.

The Aditya L1 spacecraft carries seven payloads to observe the photosphere, chromosphere and the outermost layers of the Sun (the corona) using electromagnetic and particle and magnetic field detectors.

Using the special vantage point L1, four payloads will directly view the Sun and the remaining three payloads will carry out in-situ studies of particles and fields at the Lagrange point L1, thus providing important scientific studies of the propagatory effect of solar dynamics in the interplanetary medium.

The suits of Aditya L1 payloads are expected to provide most crucial information 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.

The Aditya L1 spacecraft carries seven payloads to observe the photosphere, chromosphere and the outermost layers of the Sun (the corona) using electromagnetic and particle and magnetic field detectors.

Using the special vantage point L1, four payloads will directly view the Sun and the remaining three payloads will carry out in-situ studies of particles and fields at the Lagrange point L1, thus providing important scientific studies of the propagatory effect of solar dynamics in the interplanetary medium.

The suits of Aditya L1 payloads are expected to provide most crucial information 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.

The Sun, the closest star to us and the source of all energy and therefore life on Earth, lays at the core in the fields of astronomy and physics. The Sun has been studied both from missions in space and through observatories on Earth.

United States

U.S. space agency NASA, launched the Parker Solar Probe in August 2018. In December 2021, Parker flew through the Sun's upper atmosphere, the corona, and sampled particles and magnetic fields there. This was the first time ever that a spacecraft touched the Sun, according to NASA's official website.

Europe

The European Space Agency (ESA) launched Proba-2 in October 2001. Proba-2 is the second of the Proba series. Proba stands for Project for On-Board Autonomy.

China

In 2022, the Advanced Space-based Solar Observatory (ASO-S) was launched. The observatory is reportedly placed in an orbit about 720 kilometers above the planet.

The 1,480 kg spacecraft will be put in a highly elliptical orbit of 235 km x 19,500 km around the Earth. The PSLV-C57, which has six solid fuel-based boosters, will take just over an hour to place the satellite in orbit.

The orbit as well as the velocity of the spacecraft will then be increased till it is slingshot towards the Sun.

The 1,480 kg spacecraft will be put in a highly elliptical orbit of 235 km x 19,500 km around the Earth. The PSLV-C57, which has six solid fuel-based boosters, will take just over an hour to place the satellite in orbit.

The orbit as well as the velocity of the spacecraft will then be increased till it is slingshot towards the Sun.

PSLV-C57 is the 59th flight of the Polar Satellite Launch Vehicle and 25th mission using PSLV-XL configuration. PSLV is considered as ISRO's workhorse when it comes to launching space missions.

PSLV-C57 will launch Aditya-L1 spacecraft in a highly eccentric Earth bound orbit. The spacecraft will perform orbital maneuvers by using its LAM to reach Sun-Earth Lagrange point L1.

PSLV-C57 is the 59th flight of the Polar Satellite Launch Vehicle and 25th mission using PSLV-XL configuration. PSLV is considered as ISRO's workhorse when it comes to launching space missions.

PSLV-C57 will launch Aditya-L1 spacecraft in a highly eccentric Earth bound orbit. The spacecraft will perform orbital maneuvers by using its LAM to reach Sun-Earth Lagrange point L1.

The major science objectives of Aditya-L1 mission are:

• Study of Solar upper atmospheric (chromosphere and corona) dynamics.

• Study of chromospheric and coronal heating, physics of the partially ionized plasma, initiation of the coronal mass ejections, and flares.

• Observe the in-situ particle and plasma environment providing data for the study of particle dynamics from the Sun.

• Physics of solar corona and its heating mechanism.

• Diagnostics of the coronal and coronal loops plasma: Temperature, velocity and density.

• Development, dynamics and origin of coronal mass ejections.

• Identify the sequence of processes that occur at multiple layers (chromosphere, base and extended corona) which eventually leads to solar eruptive events.

• Magnetic field topology and magnetic field measurements in the solar corona .

• Drivers for space weather (origin, composition and dynamics of solar wind.

Aditya L1 will be placed in a halo orbit around the Lagrangian Point 1 (L1), which is 1.5 million km from the Earth in the direction of the Sun. It will revolve around the Sun with the same relative position and hence can see the Sun continuously.

For common understanding, L1 is a location in space where the gravitational forces of two celestial bodies, such as the Sun and Earth, are in equilibrium. This allows an object placed there to remain relatively stable with respect to both celestial bodies.

These points in space can be used by spacecraft to reduce fuel consumption needed to remain in position.

Aditya L1 will be placed in a halo orbit around the Lagrangian Point 1 (L1), which is 1.5 million km from the Earth in the direction of the Sun. It will revolve around the Sun with the same relative position and hence can see the Sun continuously.

For common understanding, L1 is a location in space where the gravitational forces of two celestial bodies, such as the Sun and Earth, are in equilibrium. This allows an object placed there to remain relatively stable with respect to both celestial bodies.

These points in space can be used by spacecraft to reduce fuel consumption needed to remain in position.

ISRO in a post on X (formerly Twitter) said that DD National TV channel will live telecast the Aditya L1 Mission launch from 11:20 am.

The space agency will livestream the launch of Aditya L1 on its official website at isro.gov.in. The live stream will also be available on ISRO's Facebook page and YouTube channel.

Viewers can watch the Aditya L1 live stream in the embedded link below:

As per information on ISRO's website, Aditya L1 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.

A satellite placed in the halo orbit around the L1 point has the major advantage of continuously viewing the Sun without any occultation/eclipses, ISRO said.

This will provide a greater advantage of observing the solar activities and its effect on space weather in real time.

Aditya L1 spacecraft carries seven payloads to observe the photosphere, chromosphere and the outermost layers of the Sun (the corona) using electromagnetic and particle and magnetic field detectors.

Using the special vantage point L1, four payloads directly view the Sun and the remaining three payloads carry out in-situ studies of particles and fields at the Lagrange point L1, thus providing important scientific studies of the propagatory effect of solar dynamics in the interplanetary medium.

The suits of Aditya L1 payloads are expected to provide most crucial information 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, ISRO stated.

After the triumphant success of Chandrayaan-3, the Indian Space Research Organisation is gearing up for the launch of its debut solar mission today.

Aditya-L1 will be the first space-based Indian mission to study the Sun. The mission is scheduled to be launched at 11:50 a.m. from the Sriharikota spaceport in Andhra Pradesh.

The Aditya-L1 spacecraft is designed for providing remote observations of the solar corona and in situ observations of the solar wind at L1 (Sun-Earth Lagrangian point), which is about 1.5 million kilometres from earth.

Aditya-L1 will stay approximately 1.5 million km away from Earth, directed towards the Sun, which is about 1% of the Earth-Sun distance. The Sun is a giant sphere of gas and Aditya-L1 would study its outer atmosphere.