Space on MSN

In 1776, the solar system only had 6 planets. Now, it has 8. Does it end there?

As the United States prepares to celebrate its 250th anniversary, the history of the solar system tells its own story of exploration.
NPR

Pluto isn't a planet — but it gives us clues for how the solar system formed

This story is part of Short Wave's series Space Camp about all the weird, wonderful things happening in the universe. Check out the rest of the series. If you were born in the last century you might ...
Phys.org

Here's how interstellar objects and rogue planets can be trapped in the solar system

When 'Oumuamua traversed our solar system in 2017 it was the first confirmed Interstellar Object (ISO) to do so. Then in 2019, Comet 2l/Borisov did the same thing. These are the only two confirmed ...
The Conversation

In what order did the planets in our solar system form?

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to CuriousKidsUS@theconversation.com. Are planets in the solar system that are closer ...