tech2 News StaffApr 17, 2019 11:32:56 IST
What an ironic week for NASA's spaceflight media team. It was days ago that a NASA release announced that spaceflight has a bunch of unpleasant side-effects, some of which last six months (and counting). Days later, they've now gone ahead and announced their next big plan: sending humans to the frigid, icy expanse that is the lunar South Pole.
The last time NASA (or any humans, for that matter) flew to the Moon was in the 1970s, during the Apollo missions, all of which took place in and around the equator. However, all the probes that have sustained our interest in exploring the moon have come back saying the same thing: the South Pole could be a gold-mine for lunar research.
Why bother with the South Pole?
After ISRO's Chandrayaan-1 probe confirmed the presence of water on the Moon, NASA's Lunar Reconnaissance Orbiter (LRO) and Chinese probes have located the densest collection of water deposits in the South pole in the form of ice.
The South Pole also has the only known surface that can reflect solar wind — a steady stream of charged particles released from the Sun's upper atmosphere that the Earth's magnetic field protects us from for the most part.
Some areas near the Shackleton crater (see image) in the South pole also get plenty of sunlight — almost throughout the day, which is a promising prospect to harvest solar power.
In addition to the number of "cold traps" of ice-water found by robotic probes, there are also regions of the South pole that have a magnetized crust. This is an anomaly, according to researchers, and exists on the surface because of metallic remnants that was dislodged from the core during the massive impact that formed the South pole-Aitken (SPA) basin.
"We know the South Pole region contains ice and may be rich in other resources based on our observations from orbit, but, otherwise, it’s a completely unexplored world," Steven Clarke, deputy associate administrator of NASA's Science Mission Directorate, said in a statement.
A new challenge for NASA
A manned mission to the lunar South pole also offers NASA a new challenge — an environment largely unexplored by astronauts. Robotic probes from the US, Japan, India and most recently, China, have collectively made it the most well-studied region on the moon, according to the statement. The challenge, if any, has been the region's rugged terrain and relatively weak communication infrastructure. Though, the 'dark side', which is tidally-locked away from our view on Earth, is far more tricky where communication is concerned.
NASA intends to send the first installments of the Lunar Orbital Gateway ahead of the 2024 moon mission, but we're yet to hear how they plan to execute their planned polar first.
All said and done, their decision to send astronauts trekking to the South pole is in line with their main objective: to enable long-term human exploration of the Moon — and Mars by extension. Water is a critical resource to make that objective happen, and that's exactly what NASA's choice of landing site has in abundance.
But well before that, ISRO may have sent its second lunar probe Chandrayaan-2 to the South pole later this year. It will attempt to make a soft-landing and explore resources including water, mineral composition and magnetism in the South Pole.
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