Jupiter

Comet Nishimura l Michael Jäger

Lunar halo

@picabuzz

Corona Australis

Nebula is mostly hydrogen gas, and a small amount of metals (elements above helium) which tend to be covered as "Dust", but it's the dust that best reflect the light of the stars, and as the largest and most energetic of them are blue, you get these areas of blue haze. Hydrogen more often glows red when bombarded by UV light, the two colours together quite magical.

The area has a number of NGC objects 6726,6727,6729 but born of the same huge molecular cloud.

Our Milky Way has many such areas full of star birth, and as blue giants are not long lived, supernova and star death too.

The close-up of the Andromeda Galaxy from the Hubble Space Telescope shows how many stars there really are.

source

2023 September 28

The Deep Lagoon Image Credit & Copyright: Josep Drudis, Christian Sasse

Explanation: Ridges of glowing interstellar gas and dark dust clouds inhabit the turbulent, cosmic depths of the Lagoon Nebula. Also known as M8, The bright star forming region is about 5,000 light-years distant. It makes for a popular stop on telescopic tours of the constellation Sagittarius toward the center of our Milky Way Galaxy. Dominated by the telltale red emission of ionized hydrogen atoms recombining with stripped electrons, this deep telescopic view of the Lagoon’s central reaches is about 40 light-years across. The bright hourglass shape near the center of the frame is gas ionized and sculpted by energetic radiation and extreme stellar winds from a massive young star.

∞ Source: apod.nasa.gov/apod/ap230928.html

A beginner’s star-book, an easy guide to the stars and to the astronomical uses of the opera-glass, the field-glass and the telescope, 1912

Andromeda over the Swiss Alps Image Credit: Dzmitry Kananovich

Francesco Levy, The Constellations of Summer