From the Moon to the Sun: India launches next space mission

People watch as the PSLV XL rocket carrying the Aditya-L1 spacecraft, the first space-based Indian observatory to study the Sun, is launched from the Satish Dhawan Space Centre in Sriharikota on September 02, 2023. The latest mission in India's ambitious space programme blasted off September 2, on a voyage to the centre of the solar system, a week after the country's successful unmanned Moon landing. Aditya-L1 is carrying scientific instruments to observe the Sun's outermost layers, launching shortly before midday to begin its four-month journey. (Photo by R. Satish BABU / AFP)

(AFP) - The latest mission in India's ambitious space programme blasted off Saturday on a voyage towards the centre of the solar system, a week after the country's successful unmanned Moon landing.

Aditya-L1 launched shortly before midday, with a live broadcast showing hundreds of spectators cheering wildly against the deafening noise of the rocket's ascent.

"Congratulations to our scientists and engineers," Prime Minister Narendra Modi said on X, formerly known as Twitter.

"Our tireless scientific efforts will continue in order to develop better understanding of the Universe."

The mission is carrying scientific instruments to observe the Sun's outermost layers in a four-month journey.

The United States and the European Space Agency (ESA) have sent numerous probes to the centre of the solar system, beginning with NASA's Pioneer programme in the 1960s.

Japan and China have both launched their own solar observatory missions into Earth's orbit.

But if successful, the latest mission from the Indian Space Research Organisation (ISRO) will be the first by any Asian nation to be placed in orbit around the Sun.

"It's a challenging mission for India," astrophysicist Somak Raychaudhury told broadcaster NDTV on Friday.

Raychaudhury said the mission probe would study coronal mass ejections, a periodic phenomenon that sees huge discharges of plasma and magnetic energy from the Sun's atmosphere.

These bursts are so powerful they can reach the Earth and potentially disrupt the operations of satellites.

Aditya will help predict the phenomenon "and alert everybody so that satellites can shut down their power", he said.

"It will also help us understand how these things happen, and in the future, we might not need a warning system out there."

Aditya, the name of the Hindu Sun deity, will travel 1.5 million kilometres (930,000 miles) to reach its destination -- still only one percent of the vast distance between Earth and the Sun.

At that point, the gravitational forces of both celestial bodies cancel each other out, allowing the mission to remain in a stable halo orbit around our nearest star.

Aditya is travelling on the ISRO-designed, 320-tonne PSLV XL rocket that has been a mainstay of the Indian space programme, powering earlier launches to the Moon and Mars.

The mission also aims to shed light on the dynamics of several other solar phenomena by imaging and measuring particles in the Sun's upper atmosphere.

- Budget programme -

India has been steadily matching the achievements of established spacefaring powers at a fraction of their cost.

The South Asian nation has a comparatively low-budget space programme, but one that has grown considerably in size and momentum since it first sent a probe to orbit the Moon in 2008.

Experts say India can keep costs low by copying and adapting existing technology, and thanks to an abundance of highly skilled engineers who earn a fraction of their foreign counterparts' wages.

Last month's successful landing on the lunar surface -- a feat previously achieved only by Russia, the United States and China -- cost less than $75 million.

The touchdown was widely celebrated by the public, with prayer rituals to wish for the mission's success and schoolchildren following its final descent from live broadcasts in classrooms.

India became the first Asian nation to put a craft into orbit around Mars in 2014 and is slated to launch a three-day crewed mission into the Earth's orbit by next year.

It also plans a joint mission with Japan to send another probe to the Moon by 2025 and an orbital mission to Venus within the next two years.

© Agence France-Presse