The VISTA telescope observed the Trifid Nebula, identifying previously hidden variable stars. These variable stars exhibit a period-luminosity relationship, meaning their intrinsic brightness is ...

Henrietta Swan Leavitt worked as a Harvard “computer” earning just 30 cents an hour, yet her groundbreaking discovery of the period-luminosity relationship transformed astronomy. Her work enabled ...

(Phys.org) —With the advent of powerful space infrared telescopes like the Spitzer Space Telescope and the (recently deceased) Herschel Space Telescope, astronomers have been able to study the ...

NASA's Hubble Space Telescope captured a bright variable star, V 372 Orionis, and its companion in this festive image in this image released on Jan. 27, 2023. The pair lie in the Orion Nebula, a ...

Later this decade, the Large Hadron Collider will be upgraded to the High-Luminosity LHC. What does “luminosity” mean in particle physics? Even on the hottest and driest days, rays from the sun are ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Anyone interested in astronomy realizes that the stars are scattered through three-dimensional ...

Phil explains stars and how they can be categorized using their spectra. Today Phil's explaining the stars and how they can be categorized using their spectra. Together with their distance, this ...