Artemis 2: NASA's Moon Mission Rekindled by India's Chandrayaan-1 Discovery

Top Summary

• What happened: NASA is set to launch Artemis 2, a crewed mission to orbit the Moon, after delays. Four astronauts will embark on a lunar loop, the first in over 50 years.
• Why it matters: This mission marks a revival of crewed lunar exploration, fueled by the discovery of water on the Moon. It paves the way for sustained lunar presence and deep-space missions.
• What changes for people: Artemis 2 is expected to break spaceflight records, reaching a peak distance of over 4 lakh km from Earth and speeds of 40,000 kmph on return. It could lead to lunar outposts and resource utilization.
• Who is affected: NASA, ISRO, the international space community, and future generations who may benefit from lunar resources and deep-space exploration are affected.

Artemis 2 Launch Imminent

After technical setbacks in February and March, NASA is targeting April 1st (April 2nd in India) for the launch of Artemis 2. Four astronauts will journey around the Moon.

This mission is the first crewed lunar mission in over half a century, since the Apollo program concluded in 1972. The astronauts will not land on the Moon but will orbit it.

Breaking Barriers: Distance and Speed

Artemis 2 is poised to break spaceflight records. It's expected to reach a peak distance exceeding 400,000 km from Earth.

The crew is also expected to hit speeds of 40,000 kmph on their return journey, surpassing Apollo 10's record of 39,897 kmph set in 1969.

Chandrayaan-1: The Catalyst for Lunar Revival

The discovery of water by India's Chandrayaan-1 mission played a crucial role in reigniting interest in lunar exploration.

 

"After the landings on the Moon, people took a view that there was nothing much of interest there, that it was an uninhabitable place," says G Madhavan Nair, former ISRO chairman.

 

Prior to Chandrayaan-1, scientists believed the Moon lacked water and geological activity, making sustained human presence impractical.

Unveiling Lunar Water

Chandrayaan-1, designed as a remote-sensing mission, carried instruments from both ISRO and NASA.

Spectral signatures indicated hydroxyl and water molecules embedded in lunar minerals across large regions of the surface, especially near the poles.

 

"Once the American side published the presence of water on the Moon, we published our data which had also found that it was true," says S Somanath, former ISRO chairman.

 

A Combined Discovery

Nair emphasizes that the discovery of water was a "combined effort" by NASA and ISRO.

Further analysis suggested the presence of water ice in permanently shadowed areas of the Moon, potentially containing billions of tonnes of ice.

Lunar Resources and Beyond

The discovery of water opens up possibilities for future lunar missions. Water can be used for life support and even as fuel for rockets.

 

"In the southern polar region, in deep craters, there are billions of tonnes of ice," says Nair.

 

Chandrayaan-1 also identified significant helium deposits, including helium-3, a potential fuel for nuclear fusion.

Lunar Outpost: A Stepping Stone to Mars

Chandrayaan-1's impact is widely acknowledged, reviving international lunar interest. Longer stays, international collaboration, and a lunar space station are now envisioned.

According to M Annadurai, project director, Chandrayaan-1, the Moon is poised to become a launchpad to Mars.

Chandrayaan-3: Confirming Lunar Activity

In 2023, Chandrayaan-3 landed near the Moon's south pole, providing data on regolith behavior, thermal properties, and seismic activity.

 

"It gave us direct surfacelevel information that earlier missions could only infer remotely. Together, the missions demonstrated that the Moon was not geologically inert, that it was not a dead body," says Somanath.

 

A New Era of Lunar Exploration

Chandrayaan's findings coincided with advancements in low-cost robotic technologies, attracting more nations to lunar exploration.

Following its discoveries, missions were initiated by the US, Russia, Japan, and several other countries.

The US adopted a commercial model, funding private companies for lunar landers and orbiters. This information is feeding into Artemis planning.

By the time NASA formally committed to Artemis, costing an estimated $90 billion so far, the scientific justification was firmly in place.

What to Watch Next

The successful launch and execution of the Artemis 2 mission will determine the next steps in NASA's lunar exploration program. Future missions will focus on establishing a long-term presence on the Moon and utilizing its resources for further space exploration.