Measure the Brightness of a Variable Star
Over the past few hundred years, astronomers have discovered thousands of stars whose brightness goes up and down over time. These are known as variable stars. But what causes this to happen?
Explore Tides
The ocean’s tides rise and fall every day, but have you ever wondered what causes them? The Moon and Sun both play a role in shaping the movement of water across the Earth.
Classify Galaxies
Galaxies are vast collections containing billions of stars, planets, and massive clouds of gas, dust, and ice. Understanding galaxies is a key part of astronomy. One important tool for studying them is classification—grouping them into a few different categories.
Hunt the Asteroids
How do we find asteroids?
Predict the Solar Cycle
Keep Watch on Asteroids
Asteroids are small, rocky objects that orbit the Sun. Most are located between the orbits of Mars and Jupiter. This area of our Solar System is known as the Asteroid Belt.
