Udayavni Special

Moon is much older than previously thought: Study


PTI, Jul 30, 2019, 1:17 PM IST

Berlin: The Moon was formed about 50 million years after the solar system came into being, according to a study which suggests that the lunar body is significantly older than previously believed.

Earlier research had estimated the Moon to have formed approximately 150 million years after solar system’s formation.

The new study led by scientists at the University of Cologne in Germany found that after the formation of the solar system, 4.56 billion years ago, the Moon formed approximately 4.51 billion years ago.

In the study published in Nature Geoscience journal, the scientists analysed the chemical composition of a diverse range of samples collected during the Apollo missions.

On July 21, 1969, mankind took its first steps on another celestial body. In their few hours on the lunar surface, the crew of Apollo 11 collected and brought back to Earth 21.55 kg of samples.

Determining the age of the Moon is also important to understand how and at which time the Earth formed, and how it evolved at the very beginning of the solar system.

The study focused on the chemical signatures of different types of lunar samples collected by the different Apollo missions.

“By comparing the relative amounts of different elements in rocks that formed at different times, it is possible to learn how each sample is related to the lunar interior and the solidification of the magma ocean,” said Raul Fonseca from the University of Cologne.

The Moon likely formed in the aftermath of a giant collision between a Mars-sized planetary body and the early Earth.

Over time, the Moon accreted from the cloud of material blasted into Earth’s orbit.

The newborn Moon was covered in a magma ocean, which formed different types of rocks as it cooled.

“These rocks recorded information about the formation of the Moon, and can still be found today on the lunar surface,” said Maxwell Thiemens, former University of Cologne researcher and lead author of the study.

“Such observations are not possible on Earth anymore, as our planet has been geologically active over time. The Moon thus provides a unique opportunity to study planetary evolution,” said Peter Sprung, co-author of the study.

The scientists used the relationship between the rare elements hafnium, uranium and tungsten as a probe to understand the amount of melting that occurred to generate the mare basalts, ie, the black regions on the lunar surface.

They could identify distinct trends amongst the different suites of rocks, which now allows for a better understanding of the behaviour of these key rare elements.

Studying hafnium and tungsten on the Moon are particularly important because they constitute a natural radioactive clock of the isotope hafnium-182 decaying into tungsten-182.

This radioactive decay only lasted for the first 70 million years of the solar system.

By combining the hafnium and tungsten information measured in the Apollo samples with information from laboratory experiments, the study found that the Moon already started solidifying as early as 50 million years after solar system formed.

Udayavani is now on Telegram. Click here to join our channel and stay updated with the latest news.

Top News

Serum Institute seeks govt’s intervention over import of COVID vaccine raw material from US

All-woman COVID-19 vaccine booth launched in Karnataka

New mineral policy for 2021-26 on the anvil says CM BSY

GRSE lays keel of third advanced stealth frigate ship under Project 17A

Rijiju, Irani launch online training programme for women PE teachers, coaches

Day not far when country will be named after Narendra Modi: Mamata

5 countries including India account for about half of total child brides in world: UNICEF




Related Articles More

Jungo TV bets big on India market, launches Jungo Plus app

STPI to set up Cyber Security CoE in Mysuru

NASA’s new Mars rover hits dusty red road, 1st trip 21 feet

DRDO conducts successful flight test of SFDR technology

COVID-19 antibodies, vaccines less effective against coronavirus variants: Study

MUST WATCH

Women’s day special interview with Champa P Shetty

Udayavani special Budget Bulletin

Gender Stereotypes Faced By Women | Women’s day special Vox Pop | Udayavani

Udayavani News Bulletin 7-3-21

Crime File Exclusive :ATM Skimming case

Latest Additions

Kerala industrial charity outfit-turned-political party to contest from five assembly seats

Govt to amend telecom licence norms to control sourcing from China, non-friendly destinations

Serum Institute seeks govt’s intervention over import of COVID vaccine raw material from US

All-woman COVID-19 vaccine booth launched in Karnataka

New mineral policy for 2021-26 on the anvil says CM BSY

Thanks for visiting Udayavani

You seem to have an Ad Blocker on.
To continue reading, please turn it off or whitelist Udayavani.