The Sun | Astronomy.com

The giant sunspot AR 3354 on June 29, 2023.

Secret Sky: Seeing sunspots on paper

A spectacle of sparkling stars and shining planets dance in hues of yellow, orange, and blue, as if creating a painting made by nature during the transition from civil twilight to nautical twilight.

Discover the three kinds of twilight

A composite image of the Sun taken by ASA's Solar Dynamics Observatory.

Science, Solar System

The Sun: Facts, size, and fate of Earth’s blazing star

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

Solar System, The Sun

The Sun’s death could mean new life in the outer solar system

Telescopes and Equipment

Review: Make Sun-watching a snap

Robotic Spaceflight

India’s leap into solar science: The Aditya-L1 mission

Science, Solar System

Rising star in astronomy: Alexander James

Why fusion ignition is being hailed as a major breakthrough in fusion – a nuclear physicist explains

Meet Eclipse Traveler, your guide to the greatest shows on Earth

Astronomy for beginners, Observing Basics, The Sun

Safely observe the Sun

Hidden companions shape the final days of dying stars