ALMA (Atacama Large Millimeter/submillimeter Array) observations involve using a network of telescopes located in the Atacama Desert in Chile to observe and study the universe at millimeter and submillimeter wavelengths. These observations are vital for studying a wide range of astronomical phenomena, including planet formation, star birth and death, galaxies, and interstellar gas and dust. ALMA's high sensitivity and spatial resolution make it a powerful tool for astronomers to unravel the mysteries of the cosmos.