Pickleball Physics Explained, from Balls and Paddles to Shots

Why is COVID-19 surging again—and do shots still make sense?

See Ten Awe-Inspiring Images From the Astronomy Photographer of the Year Contest. Auroras, nebulas and stars take the spotlight in this space-themed competition, alongside shots of our own sun and moon.

India's Aditya-L1 solar probe snaps shots of our hyperactive sun during May outburst (photos)