Magazine | Page 15 of 283 | Astronomy.com

Why is the Moon exactly the same apparent size from Earth as the Sun? Surely this cannot be just coincidence; the odds against such a perfect match are enormous.

Observing, The Sun, Upcoming Events

How to observe the Sun safely during a solar eclipse

Eclipse

Astrophotography

How to choose a camera for the eclipse

Why is the Sun’s corona so hot?

Eclipse over the Tetons - Totality Ends

Sky This Month: April 2024

The very center of globular cluster NGC 6397

How do globular clusters remain intact for so long?

The makeup of the universe

Are the percentages of dark matter and dark energy stable?

Credit: NASA/JPL-Caltech.

Exotic Objects, Galaxies

How does a black hole get to the center of a galaxy, and does the galaxy revolve around it?

The Cocoon Nebula (IC 5146) is a reflection and emission nebula that lies 4,000 light-years away in Cygnus. The author captured this image with HαRGB filters and exposures of six, three, three, and three hours, respectively.

Telescopes and Equipment

Review: The amazing Stellarvue 180mm refractor

Is Earth the only Goldilocks planet?

Albireo

Why are there no green stars?

NGC 4565, the Needle Galaxy, was imaged with a ZWO ASI294MC Pro on a Takahashi FSQ-106N with 18 hours and 50 minutes of exposure.

Deep-Sky Objects, Observing Basics

Here are a few targets Messier missed that are worth a visit