Donald (Don) Machholz, an amateur astronomer who co-invented the Messier marathon and visually discovered 12 comets that now bear his name, died early yesterday morning (Aug. 9) at his home — called ...
A dazzling new image shows the globular cluster Messier 69, or M 69 for short, as viewed through the NASA/ESA Hubble Space Telescope. Globular clusters are dense collections of old stars. In this ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback