https://earthsky.org/astronomy-essentials/stellar-luminosity-the-true-brightness-of-stars

Feb 18, 2017 ... Some extremely large and hot stars blaze away with the luminosity of a million suns! But other stars look bright only because they're near Earth.

https://en.wikipedia.org/wiki/Luminosity

In astronomy, luminosity is the total amount of energy emitted per unit of time by a star, galaxy, or other astronomical object. As a term for energy emitted per unit ...

https://www.space.com/21640-star-luminosity-and-magnitude.html

Oct 11, 2017 ... A glance at the night sky above Earth shows that some stars are much brighter than others. However, the brightness of a star depends on its ...

https://www.atnf.csiro.au/outreach//education/senior/astrophysics/photometry_luminosity.html

Luminosity of stars page for astrophysics option for NSW HSC Physics.

http://www.astronomy.ohio-state.edu/~ryden/ast162_2/notes7.html

Jan 14, 2014 ... The rate at which photons carry away energy from the star is called the star's luminosity. Luminosity is frequently measured in watts (that is, ...

https://www.universetoday.com/24783/star-luminosity/

Feb 6, 2009 ... Astronomers refer to the amount energy coming off the surface of a star as “ luminosity”. As a baseline, astronomers measure the luminosity of ...

https://astro.unl.edu/naap/hr/hr_background2.html

Luminosity is the total energy that a star produces in one second. It depends on both the radius of the star and on its surface temperature. One can calculate ...

http://www.cosmos4kids.com/files/stars_luminos.html

Cosmos4Kids.com! This astronomy tutorial introduces star luminosity. Other sections include the Universe, galaxies, and the Solar System.

https://www.astronomynotes.com/starprop/s4.htm

Nov 2, 2010 ... The brightness of stars are specified with the magnitude system. ... The absolute magnitude is a measure of the star's luminosity---the total ...

https://www.e-education.psu.edu/astro801/content/l4_p4.html

When I say apparent brightness, I mean how bright the star appears to a detector here on Earth. The luminosity of a star, on the other hand, is the amount of light ...