- Astronomers have created a beautiful atlas of 400,000 galaxies in the cosmic
neighbourhood of Milky Way and named it the Siena Galaxy Atlas. - Siena Galaxy Atlas is a digital atlas that was created to get to know our universe better
through several of the known galaxies. - It was created using data from three astronomical surveys collected between 2014 and
2017 at Cerro Tololo Inter-American Observatory (CTIO) and Kitt Peak National
Observatory (KPNO). Together, these surveys are known as the DESI Legacy Surveys. - It Is dependent on state-of-the-art digital images captured by advanced technology,
unlike previous atlases, which relied on antiquated equipment and photographic plates. - As it is built on the images captured with highly sensitive instruments, it boasts the most
accurate data. - It is also the first cosmic atlas to feature the light profiles of galaxies - a curve that
describes how the brightness of the galaxy changes from its brightest point to its
dimmest.
