Magazine | Page 13 of 277 | Astronomy.com

Jupiter and its Galilean moons

Sky This Month: November 2023

This artist’s impression shows how ULAS J1120+0641, a very distant quasar powered by a black hole with a mass two billion times that of the Sun, may have looked. This quasar is the most distant yet found and is seen as it was just 770 million years after the Big Bang. This object is by far the brightest object yet discovered in the early Universe.

What we’ve learned in 60 years of studying quasars

Equations.

10 top equations in astronomy

Why is the night sky dark?

Winner of the 50th anniversary essay contest announced

JWST image of the Pillars of Creation

If protostars aren’t yet generating light through fusion, how can JWST see them?

The Sun provides necessary energy for life on Earth, thanks to its powerful but compact core, which takes up just 1/50 our star’s volume.

Strange Universe: Astounding fundamentals

NASA's image of a "ring of fire" eclipse.

The Moon, The Sun, Upcoming Events

How to see the 2023 annular eclipse: The ‘Ring of Fire’ is here

Anyone can get started with observing, thanks to the Astronomical League’s programs. Here, the author peers through her telescope in the twilight.

Observing Basics

Observing Basics: Supercharge your observing

Crisscross Cassiopeia the Queen to find the constellation’s characteristic clusters.

Deep-Sky Objects

Binocular Universe: Queenly clusters

The wide-field view of the Cygnus Loop was taken with the WIYN 0.9-meter at KPNO.

Deep-Sky Objects

Secret Sky: Fleming’s Triangular Wisp

A frame from the Illustris Simulation

What is the cosmic web made of?