An astronomical interferometer or telescope array is a set of separate telescopes, mirror segments, or radio telescope antennas that work together as a single telescope to provide higher resolution images of astronomical objects such as stars, nebulas and galaxies by means of interferometry.

Astronomy is a natural science that studies celestial objects, such as stars, planets, comets, and galaxies, as well as the phenomena and processes that occur in outer space.

An atomic clock is a type of clock that uses the vibrations of atoms to measure time with extreme accuracy.

Bell Labs (formerly known as Bell Telephone Laboratories) is a research and development organization that focuses on technological innovation in telecommunications.

A black hole is a region in space where the gravitational pull is so strong that nothing, not even light, can escape from it.

Earth is the third planet from the Sun in our solar system and the only known celestial body to support life.

Electricity is the presence and flow of electric charge.

Electromagnetic radiation refers to the waves of electric and magnetic fields that propagate through space.