<prompt> Hlalosa mohopolo oa taba e lefifi.nan  <response>: Instruction in English: Explain the concept of dark matter. . Response in English: Dark matter is a mysterious and largely unknown substance that is believed to make up around 27 of the mass and energy of the universe. It is known as dark matter because it does not interact with light and therefore cannot be seen, making it difficult to study directly. However, its presence can be inferred by observing its gravitational effects on astronomical objects like galaxies or clusters of galaxies. Scientists first proposed the existence of dark matter in the 1930s, when they noticed that the observed mass of galaxy clusters was not enough to explain the motions of galaxies within them based on the law of gravitation. This led them to believe that there must be another, unseen form of matter present that was exerting an additional gravitational force. Further evidence for dark matter came with the discovery of the cosmic microwave background radiation, which is thought to be the afterglow of the Big Bang. Studies of this radiation suggest that normal matter alone could not explain the patterns seen, and that dark matter must be present.Despite the evidence in its favor, the nature of dark matter is still not well understood. Scientists have proposed a variety of theories to explain what it is, including weakly interacting massive particles WIMPs, axions, and sterile neutrinos. However, none of these theories has been definitively confirmed, and the search for the true nature of dark matter remains one of the most intriguing and challenging pursuits in physics and astronomy. . Response in Sesotho: Lefifi ke ntho e makatsang ebile e sa tsejoe haholo eo ho lumeloang hore e etsa hoo e ka bang 27 ea boima le matla a bokahohle. E tsejwa e le taba ya lefifi hobane ha e kopane le kganya mme ka hona e ke ke ya bonwa, ho etsa hore ho be thata ho ithuta ka kotloloho. Leha ho le joalo, boteng ba eona bo ka hlalosoa ka ho shebella liphello tsa eona tsa matla a khoheli linthong tsa linaleli tse kang lihlopha tsa linaleli kapa lihlopha tsa lihlopha tsa linaleli. Bo-rasaense ba qalile ho hlahisa boteng ba lintho tse lefifi ka bo-1930, ha ba hlokomela hore bongata bo hlokometsoeng ba lihlopha tsa linaleli bo ne bo sa lekana ho hlalosa motsamao oa lihlopha tsa linaleli ka hara tsona ho latela molao oa matla a khoheli. Sena se ile sa etsa hore ba lumele hore e tlameha ebe ho na le ntho e ngoe e sa bonahaleng e neng e fana ka matla a eketsehileng a khoheli. Bopaki bo bong bakeng sa lintho tse lefifi bo tlile ka ho sibolloa ha mahlaseli a morao a microwave a cosmic, ao ho nahanoang hore ke lehlaseli la Big Bang. Liphuputso tsa mahlaseli ana li fana ka maikutlo a hore ntho e tloaelehileng feela e ke ke ea hlalosa mekhoa e bonoang, le hore taba e lefifi e tlameha ho ba teng. Ho sa tsotellehe bopaki bo e tšehetsang, sebōpeho sa taba e lefifi e ntse e sa utloisisoe hantle. Bo-ramahlale ba hlahisitse likhopolo-taba tse fapaneng ho hlalosa hore na ke eng, ho kenyelletsa le likaroloana tse kholo tse sebetsanang ka thata WIMPs, li-axion, le li-neutrino tse nyopa. Leha ho le joalo, ha ho le e ngoe ea likhopolo-taba tsena e tiisitsoeng ka ho hlaka, me ho batlisisa semelo sa nete sa taba e lefifi e ntse e le e ngoe ea lintho tse khahlang le tse phephetsang ka ho fetisisa fisiks le bolepi ba linaleli. 