Read about Astronomy

Why the Ocean Has Tides: The Moon, the Sun and Two Bulges a Day

A clear beginner’s guide to tides: why the Moon creates two bulges, how the Sun adds spring and neap tides, and why coastlines differ so much.

Understanding the Phases of the Moon: A Beginner’s Guide to Lunar Cycles

Discover how the phases of the Moon work, why its shape changes, and how to recognize each stage of the lunar cycle in the night sky.

What Is a Light-Year? How Astronomers Measure the Distances Between Stars

A light-year measures distance, not time. Learn what it really means, why looking at stars is looking into the past, and how it compares to other units.

A Beginner’s Guide to Stargazing: How to Start Observing the Night Sky

Discover how to start stargazing with nothing but your eyes. Learn to find dark skies, spot constellations, and explore the night sky as a beginner.

A Beginner’s Guide to Space Exploration: Reaching Beyond Our World

Learn the basics of space exploration—its purpose, milestones, and how you can get involved in uncovering the mysteries of the universe.

Innovations in Space Technology: How We Explore the Cosmos Today

Discover how modern space technology—robots, reusable rockets, and global partnerships—is transforming how we explore the cosmos today.

Private Companies and the New Era of Space Exploration

Discover how private companies like SpaceX and Blue Origin are reshaping space exploration, from reusable rockets to Mars colonization plans.

The International Space Station: Humanity’s Outpost in Orbit

Explore the history, research, and future of the International Space Station, humanity’s collaborative outpost in orbit.

Unveiling the Mysteries of Dark Energy

Dark energy, making up nearly 70% of the cosmos, drives universal expansion and remains one of science’s most profound mysteries.

Dark Energy: Understanding the Force Accelerating Universal Expansion

Dark energy drives the universe’s accelerated expansion, yet its nature remains unknown—making it a key challenge in modern cosmology.