NASA pom dej khov rau saum lub hli

2024 Tus sau: Seth Attwood | [email protected]. Kawg hloov kho: 2023-12-16 16:06

"Feem ntau ntawm cov dej khov yog nyob rau hauv tus duab ntxoov ntxoo ntawm craters ze ntawm tus ncej, qhov twg kub tsis nce siab tshaj -250 degrees Fahrenheit (-156.5 degrees Celsius). Hnub ci yeej tsis ncav cuag cov qhov chaw ntawm qhov chaw vim yog me ntsis axis ntawm lub hli tig. ", - hais nyob rau hauv ib nqe lus.

Pab pawg tau coj los ntawm Shuai Li, uas ua haujlwm hauv University of Hawaii thiab Brown, thiab suav nrog Richard Elfic ntawm Ames Research Center hauv California's Silicon Valley. Cov kws tshawb fawb tau siv NASA's Moon Mineralogy Mapper, uas tau pab lawv ua pov thawj tias cov dej khov nab kuab tau pom ntawm lub hli saum npoo av, tus ncej piav qhia.

Nws tau sau tseg tias M3 ntaus ntawv tau teeb tsa ntawm Chandrayan-1 satellite, tau tsim los ntawm Indian Chaw Tshawb Fawb Lub Koom Haum (ISRO) hauv xyoo 2008. Nws lub hom phiaj tseem ceeb yog kom paub meej tias muaj cov dej khov khov rau ntawm lub hli. Nws tau sau cov ntaub ntawv ntawm lub hauv paus ntsiab lus ntawm cov dej khov, thiab tseem tuaj yeem txiav txim siab ncaj qha rau txoj hauv kev uas cov dej khov molecules absorbed infrared hluav taws xob, uas ua rau nws muaj peev xwm paub qhov txawv ntawm cov dej hauv lub xeev cov kua lossis gaseous thiab cov dej khov.

Hauv xyoo 2009, NASA tshaj tawm tias dej tau kuaj pom hauv cov qauv ntawm lub hnub qub uas tau txais thaum lub sijhawm Apollo lub hom phiaj hauv xyoo 1970s. Tom qab ntawd cov kws tshawb fawb tau suav tias ib tuj ntawm lub hli saum npoo tuaj yeem muaj txog li 946 milliliters dej. Cov kws tshawb fawb tom qab tau hais tias muaj pov thawj qhia tau hais tias lub hauv paus chiv keeb ntawm dej nyob rau lub hli.