Njengoba esikhona siyabuyaphakama ekusangeni kulelanga nge-Artemis program, ukuncinza okuthile kukhonekile okungenzanga abantu abakhulu bekunqoba: ihora yin'isikhathi elangeni? NgApril 2, 2024, i-White House Office of Science and Technology Policy (OSTP) yabhaliselwe ku-NASA ukukhomba umkela wesikhathi we-lunar oyingako okuthiwa yi-Coordinated Lunar Time, noma i-LTC, ngokuya kuthe 2026.
Isikhathi Elangeni Sidinga Umkela Wakho
Emhlabeni, sithembela ku-Coordinated Universal Time (UTC), eyinakekile inetiwekhi yama-atomic clocks angamashumi nesikhombisa umzuzwane aempilo jikelele. Izinkhosikazi ze-GPS, izinhlelo zokunuma, izinhlelo zikagesi, nonketho yonketho zonke zitibekela ekutholeni esiqalo ese-UTC.
Elanga lithwele ukuncinza okuthile. Ngenxa yezinhlobo zamagravity elangeni engcono kunamumhlaba, izithutha zika-Einstein ziphakamise ukuthi izinkhosikazi eLangeni zithwala cishe 56.02 microsecond ngaphandle kosuku kukhona izinkhosikazi zomhlaba. Lokhu kubizwa ngokuthi gravitational time dilation.
Na okubhaliselwa, lokhu kubalazwa ama-location error angamakhilomethala amaphethelo azinumba. Ezinhlelo zokulombisa umhlaba eLangeni azoba nesigaba esiphakeme sengqondo sengqondo ngensuku esisodwa. Kunaminithi enomsebenzi, iziganeko azo zigcina imakhilomethala angamaphethelo anginane — okwanele ukuthi ulwandle, i-rover esikhathiselwe isigaba, kanye nesikhathi sokufika kwesinkinini.
Umkela Wesikhathi Sika-LTC Uzosebenza
I-Coordinated Lunar Time izobakwa kuzikhimangelo zomkela we-UTC kodwa enabunjwa ulangeni. Umkela uqukethe inetiwekhi ye-atomic clocks eLangeni elingeni kanye neninkomo elangeni. Lokhu okukhisimane kuzosetshenziselwa ukubala isikhathi elangeni esiqondile.
I-LTC izamela inkomba eqinile, enemibuzo eliqanda nka-UTC ukuze isikhathi singashintshelwe phantsi abantu. Inkomba enkulu yikuthi i-LTC iyophakamisa lokhu kubalazwa okwenziwa — isikhathi elingile elangeni libalazwa ngaphandle nangaphandle.
Umuntu Omuhle
Inzwa nesikhathi se-lunar ayisikhungo sake-NASA. United Nations International Committee on Global Navigation Satellite Systems (ICG) yasungula iqembu elitshile ngo-2024 ukuze isinqumo angesikhathi solanga. Artemis Accords — eyisayinwe umzuzwane 50 wezwe — ibona isidingo somkela oziphakamele emhlabeni — futhi isikhathi esisikhokhela kukulandela.
Yini I-LTC Yozosengulela Kumeleyo
Umkela wesikhathi owentsha weLanga uzosisekela ulompisa olobungiselelo elangeni namalawula, izikhathela likufowora elangeni nomhlaba, ihlangano phakathi kwama-missions ezinkulumela isikhuni esingako-sikhathi se-lunar base entshonalanga.
I-LTC yevunyelwe okuthiwa ibhalwe lapha ibala lokubhaliselwa okuthuswe umjikelezo we-J2000.0 okubhalwe engxenyeni ka-56.02 microsecond osuku, kumkhethele wokugeleza kunayini inhlobo yesikhathi elangeni ilindele namuhla.