Solar System
See 3 planets line up in a dramatic display in the April sky
We caught a view of comet 3I/ATLAS from Mars
Earth always has more moons than you think
Phases of the moon, explained
Are we alone? Earth’s giant new telescope could finally tell us.
Our solar system has a new mysterious visitor—what is it?
Here's what a solar tornado looks like
‘Unstable’ asteroids lurk around Venus—is Earth at risk?
How to see the rare planetary alignment in February
Here's what would happen if Earth really had a second moon
9 spectacular night sky events to see in 2024
Antarctica's treasure trove of meteorites is disappearing
Colossal volcano discovered on Mars—hiding in plain sight
What is a lunar eclipse—and when will the next one happen?
How far is the sun? They took a perilous journey to find out.
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