An appearance on "Saturday Night Live" used to certify a musician's stardom. For pop stars of the social media age, has showing up become a formality?

The European Southern Observatory (ESO) has released a stunning 80 million-pixel image of the star cluster RCW 38, as captured by ESO's Visible and Infrared Survey Telescope for Astronomy (VISTA), ...

A glorious, colorful image captured by a telescope in Chile shows the bright glow of star cluster RCW 38, where young stars are being born.

"Are those shooting stars? What are those?" someone watching the breakup is heard saying from the Turks and Caicos Islands. "Look up everybody! Look up!," someone else says. SpaceX Founder and CEO ...