The basic building block of matter. It is made of protons, neutrons, and electrons. There are many different kinds of atoms. For example, the simplest atom with one proton and one electron is a hydrogen atom. An atom with six protons, six neutrons, and six electrons is a carbon atom.
Key technologies driving NASA’s Mars exploration discussed at conference
Key technologies driving NASA's Mars exploration discussed at conference by Clarence Oxford Los Angeles CA (SPX) Jul 24, 2024 NASA...