SUNSET: 
Evidence Mounts for a Magellanic Collision
Astronomers have suspected for some time that the Large and Small Magellanic Clouds collided in the recent past. The Gaia space telescope provides striking new evidence for a head-on collision.
Scientists Successfully Predicted the Shape of the Solar Corona
Scientists predicted the shape of the solar corona as it would be seen during the August 21, 2017, total solar eclipse. Observations confirmed that they got the broad strokes right.
