I am a research fellow at the University of Manchester, studying how the Moon and other planetary bodies evolved. My work involves the analysis of extraterrestrial materials (e.g. meteorites and samples returned by space missions) and performing experiments designed to simulate the conditions in evolving planets (e.g.
Data from India's recent Chandrayaan-3 mission supports the idea that an ocean of molten rock once covered the moon. Scientists from the mission have published their new findings in the journal Nature.
The scientists say the chemical composition of the lunar south pole regolith is intermediate between those of samples from two locations in the moon's equatorial region: those collected by astronauts on the US Apollo 16 flight in 1972, and those returned to Earth by the robotic Luna-20 mission, flown by the Soviet Union the same year.
By submitting your information you agree to the Terms & Conditions and Privacy Policy and are aged 16 or over.The moon is thought to have formed when a Mars-sized planet collided with Earth, ejecting rock that subsequently coalesced to form our planet's only satellite. The lunar magma ocean is thought to have been present from its formation to tens or hundreds of millions of years afterwards.
"Ground-truth" measurements such as these are crucial for interpreting observations made by orbiting spacecraft. For example, the authors compared these results with data from two previous Indian lunar missions, Chandrayaan-1 and -2, which both measured the lunar surface from orbit. However, precisely because of this random mode of sampling, it is difficult to know where on the moon they have come from, preventing us from placing them in their proper context. So, the Pragyan rover measurements help us build a picture of what different regions of the moon look like, and how our meteorite samples compare.
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