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 exoplanet refers to a planet that orbits a star outside of our solar system.

The Extremely Large Telescope (ELT) is a state-of-the-art astronomical observatory currently under construction by the European Southern Observatory (ESO).

The Giant Magellan Telescope (Giant Magellan or GMT) is a 25.

GW 170817 was a gravitational wave (GW) signal observed by the LIGO and Virgo detectors on 17 August 2017, originating from the shell elliptical galaxy NGC 4993.

The Mount Wilson Observatory (MWO) is an astronomical observatory in Los Angeles County, California, United States.

A radio telescope is a specialized antenna and radio receiver used to detect radio waves from astronomical radio sources in the sky.

SN 1987A was a type II supernova in the Large Magellanic Cloud, a dwarf satellite galaxy of the Milky Way.