Magazine | Page 93 of 282 | Astronomy.com

In a location far from city lights, on a night of good seeing, what percentage of stars visible to the naked eye is beyond our galaxy?

The pulsing Moon

Observing, The Sun

A while back, I saw a rainbow circle about 40° in diameter around the Sun. The inside of the circle was darker. I’d like to know why the circle was there, and what math explanation there is to address its huge size. It looked like a cap was taken off the atmosphere and you could peer into the universe.

January’s top 10 targets

Talking totality

Deep-Sky Objects

Target open clusters

Why are magnetic fields rare in massive stars and in close pairs? As far as I know, all stars have rotating plasma interiors, so they should all have magnetic fields. Would the lack of a magnetic field mean that the star does not have solar flares?

Seven dwarfs of winter

How are parachutes developed and tested for landings on the planets beyond Earth?

In a shark’s eye

Telescopes and Equipment

Astronomy tools actions set

Double your observing fun