The Astrospheric app forest fire smoke distribution map across North America for Sunday night, July 28, 2024. Purple and red indicate the most severe smoke loading in the sky overhead. Many weather forecasts will predict clear, cloudless skies – but observers and imagers will find the fainter celestial objects significantly dimmed. I highly recommend the…
Read more
This image from the Wide Field Imager attached to the MPG/ESO 2.2-metre telescope at ESO’s La Silla Observatory shows the spectacular globular star cluster Messier 4. This great ball of ancient stars is one of the closest of such stellar systems to the Earth and appears in the constellation of Scorpius (The Scorpion) close to…
Read more
This image of the Wild Duck Cluster, also known as Messier 11 and NGC 6705, was captured by the European southern Observatory. Note the blue and yellow stars, and the odd red one. The entire photograph covers about the size of the full moon in the sky, making M11 one of the easiest-to-see Summer Milky…
Read more
This image of the Wild Duck Cluster, also known as Messier 11 and NGC 6705 in Scutum covers a patch of sky equal to the diameter of the full moon. The magnitude 6.3 open star cluster is visible with unaided eyes and through binoculars and telescopes, despite its 6200 light-year distance. It was taken using…
Read more
This photograph of the moon by Michael Watson of Toronto was taken 9 hours after its full phase. It will closely match the appearance of the moon after it rises on Sunday night, August 22 in the Americas. A thin strip along the moon’s right-hand limb will already be darkening, and the craters there will…
Read more
The Ghost of the Moon planetary nebula aka NGC 6781 in Aquila, photographed by the European Southern Observatory 3.6-m Telescope at the La Silla Observatory in the Atacama Desert, Chile. The image spans 4.5 arc-minutes of sky, or 15% of the full moon. The object is an expanding sphere of gas – the outer shells…
Read more
This simulated view of Jupiter shows the double shadow transit, with the Great Red Spot, that will occur on Friday night, August 14. This view is for 1 am EDT on Saturday morning. Ganymede’s shadow is cast by the large moon to the lower right of Jupiter. The event will be observable anywhere in the…
Read more
The Moon as it will appear at 11 pm Eastern Daylight Time on Thursday, June 25, 2020. The prominent, dark, round crater Theophilus located mid-moon, near the terminator line, will change in appearance each night this week as its rim, and then its floor, fills with sunlight. These hourly images are available from NASA’s Moon…
Read more