Nine days ago, two quite different sky icons were imaged rising together. Specifically, Earth’s Moon shared the eastern sky with the sister stars of the Pleiades cluster, as viewed from […]

Why is there a triangle hovering over the Sun? Although the shape is unusual, the type of structure is not: it is part of an evolving solar prominence. Looping magnetic […]

Why does Saturn appear so big? It doesn’t — what is pictured are foreground clouds on Earth crossing in front of the Moon. The Moon shows a slight crescent phase […]

Galaxies of the NGC 7771 Group are featured in this intriguing skyscape. Some 200 million light-years distant toward the constellation Pegasus, NGC 7771 is the large, edge-on spiral near center, […]

The Moon’s south pole is toward the top left of this detailed telescopic moonscape. Captured on August 23, it looks across the rugged southern lunar highlands. The view’s foreshortened perspective […]

A nearby star factory known as Messier 17 lies some 5,500 light-years away in the nebula-rich constellation Sagittarius. At that distance, this 1.5 degree wide field-of-view would span about 150 […]

When can you see a black hole, a tulip, and a swan all at once? At night — if the timing is right, and if your telescope is pointed in […]

What if Saturn disappeared? Sometimes, it does. It doesn’t really go away, though, it just disappears from view when our Moon moves in front. Such a Saturnian eclipse, more formally […]

Did you see it? One of the more common questions during a meteor shower occurs because the time it takes for a meteor to flash is similar to the time […]

Do underground oceans vent through canyons on Saturn’s moon Enceladus? Long features dubbed tiger stripes are known to be spewing ice from the moon’s icy interior into space, creating a […]