Join me as I take my kindergarten students on a fun and interactive classroom spacewalk! We explore the solar system, meet ...

Approximately 4.5 billion years ago, a cold cloud of gas and dust buried deep in one of the Milky Way galaxy’s spiral arms started to collapse. From there, gravity worked its magic. The cloud began to ...

For years, astronomers have been searching for a mysterious ninth planet lurking in the dark outer reaches of our solar system. Now, a team of researchers have taken a completely different approach to ...

This article was originally featured on The Conversation. Are planets in the solar system that are closer to the Sun older than the ones further away? – Gavriel, age 10, Paducah, Kentucky A cloud of ...

This mystery has puzzled scientists for decades, but the answer—and the suspected world—remains elusive. Astronomers leading the search for the potential planet orbiting our sun far beyond Neptune ...

Alfredo has a PhD in Astrophysics and a Master's in Quantum Fields and Fundamental Forces from Imperial College London.View full profile Alfredo has a PhD in Astrophysics and a Master's in Quantum ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Our solar system ...

Scientists now believe that they have the tools to predict an aurora’s green glow in the night sky above Mars. Today in Helsinki, Finland, planetary scientist Elise Wright Knutsen of the University of ...