As shown above, on Monday, August 2, 2021 from 9:54 pm to 9:58 pm EDT, the International Space Station will make a low pass visible in the GTA, rising from the western horizon near Venus, and then disappearing into Earth’s shadow in the southern sky in Scorpius. Artificial satellites are visible because they are high…
Read more
This gorgeous image of the Dumbbell Nebula, aka Messier 27, in Vulpecula was captured by Steve McKinney of Toronto near Thornbury, Ontario on July 29, 2017. It shows a shell of glowing gas surrounding a hot white dwarf star, the corpse of a star similar in mass to our sun. The image spans about 0.4…
Read more
On Friday, July 23, the moon will reach its full phase. On that evening, the libration of the moon will cause the moon to appear to tilt downwards and twist to the left a bit, allowing Earthlings to see features along the moon’s northeastern limb that are normally not visible (green labels). Major lunar features…
Read more
This simulated view of Saturn for this month shows how the rings are closed enough now to reveal a bit of Saturn’s southern polar region. Hello, mid-July Stargazers! Here are your Astronomy Skylights for the week of July 11th, 2021 by Chris Vaughan. Feel free to pass this along to your friends and send me…
Read more
This terrific image by Amir H. Abolfath was featured in NASA’s Astronomy Picture of the Day (APOD) for October 14, 2020. The bright star inside the orange zone at lower left is Antares in Scorpius. The big and bright globular cluster Messier 4 sits to its lower right. The pink region is glowing hydrogen gas…
Read more
The well-known Pleiades open star cluster (Messier 45) has long been the centre of indigenous star stories around the world, including South Pacific island groups. The Maori of New Zealand tie their new year to the appearance of the Pleiades in the pre-dawn sky during June/July. The area of sky shown here spans 2 degrees.…
Read more
This image of Messier 13 in Hercules, the father of all globular star clusters visible from the Northern Hemisphere, was captured by Martin Pugh. Hundreds of thousands of stars, 25,000 light-years away from the sun, are arranged in a sphere by their mutual gravitational attraction. M13 is visible as a faint fuzzy patch to the…
Read more
This mosaic of images taken by the Lunar Reconnaissance Orbiter is centred on Mare Imbrium, the huge and ancient impact basin that covers much of the moon’s northern Earth-facing hemisphere. The mountains around its right (lunar west) edge are highlighted around the first quarter phase. Sinus Iridium and the curved Montes Jura are prominent about…
Read more
A fine example of an annular solar eclipse during totality (annularity)! Much of Eastern North America will see a typical partial eclipse (with a bite out of the sun) already in progress at sunrise on Thursday, June 10. It will end at 6:39 am EDT. Use proper solar filters to view any of this eclipse…
Read more
Messier 101 also known as the Pinwheel Galaxy and NGC 5457 is a large, face-on spiral galaxy in Ursa Major near the Big Dipper’s handle tip star, Alkaid. This Sloan digital Sky Survey image spans about 25 arc-minutes top to bottom – or about the diameter of the full moon. In June the galaxy is…
Read more