Latest about Solar System
How Much Has Mercury Shrunk?
Mercury is still shrinking as it cools in the aftermath of its formation; new research narrows down estimates of just how much it has contracted.
Mercury quiz: How well do you know the Swift Planet?
This quiz will explore the facts, the fun and the fascinating quirks of our solar system’s speedster, Mercury
What is the moon phase today? Lunar phases 2025
Reference See what moon phase it is tonight and find out when you can see the rest of the moon phases for 2025.
How the nature of environmental law is changing in defense of the planet and the climate
The effects of Earth's changing climate is driving up the number of legal suits related to environmental issues
Moon quiz: For all lunatics
Think you know Earth's moon? Test your knowledge in a lunar quiz!
If everyone in the world turned on the lights at the same time, what would happen?
Beyond powering lights, it's also important to think about where all that light would go.
Whose moon is it anyway? A matching space quiz
In this quiz, you’ll test your cosmic knowledge by matching each moon to the planet it calls home.
NASA plans to build a nuclear reactor on the moon — a space lawyer explains why, and what the law has to say
Recently, acting NASA Administrator Sean Duffy reportedly suggested a U.S. reactor would be operational on the moon by 2030.
