6 spectacular 'Astronomy Pictures of the Day' shared by NASA

Messier 20 lies about 5,000 light-years away toward the nebula rich constellation Sagittarius.

A Halley-type comet with an orbital period of about 133 years, Comet 109P/Swift-Tuttle is recognised as the parent of the annual Perseid Meteor Shower.

Looping through the Jovian system in the late 1990s, the Galileo spacecraft recorded stunning views of Europa.

Almost every object in the featured photograph is a galaxy.

Globular star cluster Omega Centauri, also known as NGC 5139, is 15,000 light-years away.

Across the heart of the Virgo Galaxy Cluster lies a string of galaxies known as Markarian's Chain.

Image source: NASA