Articles
Guides to galaxies, nebulae, telescopes, and the night sky — for curious minds everywhere.
World’s Greatest Ground-Based Observatories
From mountaintop giants to desert installations, the world’s great ground-based observatories push the boundaries of what we can see from Earth. Explore the most important observatories, how they work, and what they have discovered.
Team Visit Astronomy · Jan 16, 2026
SOHO: Our Eye on the Sun
The Solar and Heliospheric Observatory (SOHO) has been watching the Sun continuously since 1996, revolutionizing our understanding of solar physics. Learn how SOHO works, what it has discovered, and why it still matters today.
Team Visit Astronomy · Jan 13, 2026
Chandra X-Ray Observatory: Seeing the Invisible Universe
NASA’s Chandra X-Ray Observatory has revealed the invisible, high-energy universe for over 25 years. Discover how Chandra works, its greatest discoveries, and why X-ray astronomy matters for understanding the cosmos.
Team Visit Astronomy · Jan 11, 2026