YR4 has a 2% chance of hitting Earth in 2032. Astronomers are tracking it to refine estimates of its size and orbit to see how much of a risk the space rock poses.

When we asked you, readers of CNN.com and the What Matters newsletter, for your questions about the whirlwind of news that ...

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This week, see what makes loggerhead sea turtles “dance,” track a cosmic “ghost particle,” uncover an ancient basilica, and more.

Hungarian Prime Minister Viktor Orbán has become an icon for the global conservative movement that Donald Trump has attached himself to, and is a regular visitor to Trump's headquarters at Mar-A-Lago ...