We measure the sky and objects in degrees of arc, which can be further divided into arcseconds and arcminutes.

Multiple recent studies have focused on galaxies to lift the veil on their formation - by looking at their radio lobes, building computer models or even diagnosing a broken spiral arm.

Recent observations show two objects that are so well aligned with Earth that we see incredible ring shapes.

Data from the Cassini mission, showing rippling waves in Saturn's rings, has at long last been interpreted as evidence for the planet containing a fuzzy core.

Watch out for the Solar System’ giants this week! Jupiter reaches opposition, making it appear at its largest and brightest.

The L 98-59 exoplanetary system is located only 35 light-years away from Earth, and may be one of the closest ones where a planet hosts life.

For its tenth birthday, NASA’s Juno spacecraft was given an unprecedented view of the Solar System’s largest Moon: Jupiter’s Ganymede.

When I downloaded the recent 1-Click Observation narrowband data for the Ant Nebula, I did not know that this object’s designation was Menzel 3.

No one likes to be photobombed, especially astrophotographers, by the ever-increasing number of satellites. Once a satellite leaves its trails on your frame, it’s near impossible to remove it after stacking.

Recurrent Nova RS Ophiuchi is in OUTBURST! 

Today is podium day! Our judges have completed their evaluation of all the post-processed pictures submitted for the previous month contests and now we have the winners.

Like the Messier Catalog, The Caldwell Catalogue is an astronomical index of 109 star clusters, nebulae, and galaxies for observation by amateur astronomers.