Photo by Chris J Ratcliffe/Getty Images If you think about it, without the Moon appearing during the day, we wouldn't have solar eclipses, because these events rely on the Moon being visible in the sky at the same time as the Sun. Below we'll reveal the mechanics of the lunar ...
(Note: Since the Moon was in front of the Earth as seen from the direction of the Sun, there would have been an eclipse of the Sun at least partially visible from about half of the side of the Earth "behind" the Moon during the time it took to move between the Earth and Sun. So...
The Moon passes 1.1° south of Pluto at 7 A.M. EST, when both are below the horizon in Capricornus. Due to the low altitude of this constellation during darkness and the immense faintness of Pluto, the latter will not be visible except to those with very large scopes at southerly declin...
The perigee Super Moon rising over the floodwaters of the Bow River during a record flood that inundated many parts of southern Alberta around rivers, including here on the Siksika First Nations reserve. Credit and copyright: Alan Dyer/Astronomy Calgary/Amazing Sky Photography. A 3-photo HDR im...
experimental approach: observing Earth’s round shadow creeping across the Moon during a lunar eclipse, he concluded that Earth must be spherical and that the Moon was an independent world, and he correctly explained the Moon’s phases and accurately estimated the distance between the two bodies....
it began to retain the huge signatures of basin-forming collisions with asteroid-sized bodies left over from the formation of the solar system. About 3.9 billion years ago, one of these formed the great Imbrium Basin, orMare Imbrium, and its mountain ramparts. During some period over the next...
The daytime moon can be visible for most of the month. Why do the moon and sun share the daytime sky? (Image credit: Getty Images) The moon's presence in the night sky has transfixed people for millennia. But why is the moon sometimes visible during daylight? We sometimes see the ...
Capture the full moon. A full moon occurs when the lunar hemisphere facing Earth is completely lit by the sun. The rising full moon can create a “blue hour” where there is enough light from the moon to illuminate it and the surrounding area. During blue hour, you can catch startlinglan...
Comparing the size of the moon at different focal lengths (full-frame and crop sensor DSLRs). You can always crop your photo during the photo editing stages of your project to display a larger image. However, capturing the moon at a long focal length will provide more detail and resolution...
In the 1950s, the Cold War sparked a race to visit Earth's moon with flybys, robots, and crewed missions. Here's what we discovered—and what's next.