How do Black Holes Make a Shadow?

How do Black Holes Make a Shadow?

[ad_1] It’s notoriously difficult to take a picture of a black hole. But when they are surrounded by material we have an opportunity to witness the hole carved out by the event horizon. But what we see in the famous images of black holes isn’t the event horizon...

Earth from Space: Poyang Lake, China

[ad_1] This Copernicus Sentinel-2 image shows Poyang Lake in China’s Jiangxi Province during winter.Zoom in to explore this image at its full resolution or click on the circles to learn more about the features in it.In summer, Poyang Lake is China’s largest freshwater...
Nikon Prostaff P7 8×42 binoculars review

Nikon Prostaff P7 8×42 binoculars review

[ad_1] The Nikon Prostaff P7 8×42 binoculars are a lightweight and affordable alternative to their P3 binoculars. Often, when asked what the perfect binoculars for stargazing are, astronomers will cite those with a magnification of at least 10×50. This makes...