Albert Einstein was a renowned physicist who revolutionized our understanding of the universe.

American Scientist (informally abbreviated AmSci) is an American bimonthly science and technology magazine published since 1913 by Sigma Xi, The Scientific Research Honor Society.

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.

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

Classical mechanics is a branch of physics that deals with the motion of objects, using principles and mathematical equations developed by Isaac Newton and others.

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

The electromagnetic spectrum is the range of frequencies of electromagnetic radiation and their corresponding wavelengths and energies.

The European Space Agency (ESA) is an intergovernmental organization dedicated to space exploration and scientific research.