Chandrayaan-2 is about to begin its final descent to pull off a historic soft landing on the lunar surface.
The India's second moon mission has gone through a long journey dotted with many events in close to 12 years since being conceived in 2007.
Starting from Chandrayaan 1, here's a list of all the major events that led Chandrayaan-2 to where it is today:
Over 100 eminent Indian scientists in the fields of planetary and space sciences, Earth sciences, physics, chemistry, astronomy, astrophysics and engineering and communication sciences discuss and approve the Task Force recommendation to launch a probe to the moon.
August 15, 2003
Prime Minister Atal Bihari Vajpayee announces the Chandrayaan mission during his Independence Day speech.
The government gives its approval for the moon mission.
October 22, 2008
Chandrayaan-1 launched successfully from Satish Dhawan Space Centre, Sriharikota using four-stage PSLV rocket.
November 26, 2008
The indigenous Terrain Mapping Camera, which was first activated on October 29, 2008, acquires images of peaks and craters. This comes as a surprise to Isro officials because the Moon consists mostly of craters.
March 25, 2009
Chandrayaan-1 beams back its first images of the earth in its entirety.
ISRO announces in January 2009 the completion of the mapping of the Apollo Moon missions landing sites by the orbiter, using multiple payloads. Six of the sites have been mapped including landing sites of Apollo 15 and Apollo 17.
January 29, 2009
Scientists from India, Europe, and the US conduct a high-level review of Chandrayaan-1 after the spacecraft completed its first 100 days in space.
August 28, 2009 - end of the Chandrayaan-1 mission
The mission was expected to operate for two years. However, communication with the spacecraft was suddenly lost. The probe had operated for 312 days. The craft had been expected to remain in orbit for approximately another 1000 days and to crash into the lunar surface in late 2012, although in 2016 it was found to still be in orbit.
November 12, 2007
September 18, 2008
Government approves the mission to the moon in a meeting chaired by the then PM Manmohan Singh.
Isro and Roscosmos complete the design of Chandrayaan-2 and it is reviewed by India and Russia.
India decides to go it alone in the mission after Russia informed of its inability to provide the lander even by 2015. The project is rescheduled to 2016.
The spacecraft's launch had been scheduled for March 2018, but was delayed to conduct further tests on the vehicle. On 19 June 2018, after the program's fourth Comprehensive Technical Review meeting, a number of changes in configuration and landing sequence were planned for implementation, pushing the launch to the first half of 2019.
June 29, 2019
After completion of all tests, rover integrated with lander Vikram.
July 2, 2019
— Equipment bay camera cowling assembly completed
— Radio frequency checks completed with Chandrayaan 2 spacecraft
— Payload fairing assembly in progress
July 4, 2019
Integration of encapsulated assembly of Chandrayaan-2 with launch vehicle completed.
July 7, 2019
— GSLV MkIII-M1 moved to launch pad.
— Spacecraft is powered and health check in progress
July 10, 2019
— Shroud final assembly completed
— Cryogenic stage (C25) On Board Elementary checks completed
— Liquid stage (L110) control system checks completed
July 12, 2019
— Launch rehearsal completed
— Pre fill pressurisation of propellant tanks completed
July 15, 2019
Chandrayaan-2 was scheduled to be launched, but it was put off due to technical snag.
July 22, 2019
India successfully launches Chandrayaan 2 from Satish Dhawan Space Centre in Sriharikota.
July 24, 2019
First orbit raising manoeuvre performed successfully.
August 2, 2019
Fouth orbit raising manoeuvre successful
August 4, 2019
ISRO releases first set of earth pictures captured by Chandrayaan-2
August 14, 2019
Chandrayaan-2 leaves earth's orbit
August 20, 2019
Chandrayaan 2 successfully enters orbit around Moon
August 21, 2019
ISRO performs 2nd lunar-bound orbit manoeuvre
August 22, 2019
ISRO releases first Moon image captured by Chandrayaan-2
September 1, 2019
Fifth lunar maneuver executed
September 3, 2019
First de-orbiting manoeuvre performed for Chandrayaan-2
September 4, 2019
Chandrayaan-2's second de-orbiting manoeuvre executed
September 7, 2019
The Chandrayaan-2 moon mission is scheduled to land on the lunar surface at 1:55 am on Saturday