New posts in Astronomy

Can we determine the date just from sky observations?

Why were pulsars not discovered in the visual spectrum?

Can anything be seen from the center of the Boötes void? How dark would it be?

Orange ring in a black hole image

Is the black hole image in false color?

Did the new image of black hole confirm the general theory of relativity? (M87)

Why isn't the circumferential light around the M87 black hole's event horizon symmetric?

How can a day be exactly 24 hours long?

Would a galaxy be visible from outside, but nearby?

Why is there so much iron?