The method is commonly used in statistics, a branch of applied mathematics, to obtain a sample that is representative of the larger population. The simple random sampling method allows researchers ...

NASA's troubled Mars sample-return program may have a new lifeline, in the form of a proposal from private space company Rocket Lab to help save the mission. When the Perseverance rover landed on ...

The fragment of an Early Classic miniature stela is the earliest known example of a New Year monument in the Maya area. The name of the protagonist of the image on the stela likely corresponds to that ...