The most recent Indian attempt, which comes days after Russia's first lunar mission in 50 years crashed, was unsuccessful in 2019.
Days after a Russian probe crashed in the same area, India may become the first country to land a spacecraft on the moon's south pole. This would be a historic moment for the most populous country in the world as it moves closer to achieving goals established by other major space powers.
On Wednesday, right after 6 pm India time (12:30 GMT), Chandrayaan-3, which means "Mooncraft" in Sanskrit, is planned to land close to the little-known lunar south pole.
The Times of India's front page headline on Wednesday, with the anticipated lunar landing dominating local headlines, read, "India reaches for the moon." It's D-Day for the lunar expedition, according to The Hindustan Times.
The new attempt by India comes only days after Russia's first moon mission in almost 50 years, which was headed for the same region, crashed on the lunar surface. An earlier Indian attempt in 2019 was unsuccessful.
The most recent photographs the lander sent home, according to former Indian space chief K Sivan, however, offered every indication the mission's final leg would be successful.
"It is encouraging that we will be able to complete the landing mission without any issues," he said on Monday, according to the AFP news agency.
When the previous lunar module lost touch with scientists just before it was supposed to arrive four years ago, the Indian Space Research Organisation (ISRO) made adjustments, according to Sivan.
"Chandrayaan-3 is going to go with more ruggedness," he declared. "We're confident that everything will go as planned, and we expect it to."
The Indian Space Association's director general, Anil Kumar Bhatt, told Al Jazeera that he was optimistic that the spacecraft will land gently.
India has already launched two missions: Chandrayaan-1, which was a complete success; Chandrayaan-2, which was only partially successful. During that first mission, our lander crashed-landed, but our scientists, I'm confident, took the lessons learnt from it to heart.
And this time, they have included all fail-safe features, they have learned the proper lessons, and I am confident that we will have positive news.
'Smooth sailing is still going on'
The Apollo missions of the 1960s and 1970s, which arrived at the moon in a matter of days, were far faster than this mission, which was launched over six weeks ago in front of thousands of enthusiastic spectators.
A day before the landing, the ISRO posted on social media that everything was going according to plan.
India has a very low-budget aerospace project, although it has expanded significantly in size and velocity since it launched its first lunar orbiting mission in 2008.
The cost of the most recent mission is $74.6 million, which is significantly less than that of other nations and evidence of India's thrifty space engineering.
According to experts, India can keep prices down by utilising and adapting current space technology, as well as by employing a large number of highly competent engineers who make a small fraction of what their foreign colleagues do.
India became the first Asian country to launch a satellite into Mars orbit in 2014, and by next year, it is planned to launch a three-day crewed trip into Earth's orbit.
'Extremely important'
The exploration of the largely uncharted lunar south pole by India will add "very, very important" knowledge to the scientific community, according to Sivan, the former head of ISRO.
Prior to now, only China, the United States, and Russia had successfully completed a controlled landing on the moon's surface.
The first lunar probe to be launched by Russia in nearly 50 years was earlier this month.
If successful, it would have been the first mission of any country to perform a controlled landing at the lunar south pole, beating Chandrayaan-3 by a few days.
But on Saturday, when the Luna-25 probe was getting ready to descend, it experienced an unknown problem and crashed-landed.
Russia's space industry has been impacted by punitive sanctions since the start of the Ukraine conflict, in addition to being plagued by corruption, a lack of innovation, and collaborations.
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