Magazine

The Moon, Upcoming Events

When to see the Moon’s beaded ‘heart’

Gear Guide

Spring for new astronomy products this month

Science

Earth as a planet

Science, Solar System

Solving the climate equation

Science, Solar System

How to build climate solutions: An interview with Tony Fadell

Science, Solar System

Why our climate future depends on Antarctica

Robotic Spaceflight, Science, Solar System

How we study our planet

Observing

April 2025: What’s in the Southern Hemisphere sky this month?

Observing

April 2025: What’s in the sky this month?

Stars

Will Sirius B explode as a type Ia supernova?

Science

M17 stars in a cosmic vista

Telescopes and Equipment

What is the difference between a 2″ eyepiece and a 1¼” eyepiece?