The Sun’s outer atmosphere—the corona—only reveals itself during total solar eclipses, which happen about every 18 months on ...

If you were to look at a giant picture of space, zoom in on the Milky Way galaxy, and then zoom in again on one of its outer spiral arms, you’d find the solar system. Astronomers believe it ...

In 2005 Levison and his colleagues at the Côte d’Azur Observatory in Nice, France, published an influential hypothesis, now called the Nice model, which posits that the solar system began with ...

Videos showed the headquarters of the Iranian state broadcaster burning under a thick column of black smoke, on the fourth day of back-and-forth attacks. How Tough Is Iran? A String of Military ...