Stellar explosions are most often associated with supernovae, the spectacular deaths of stars. But new ALMA observations provide insights into explosions at the other end of the stellar life cycle, star birth. Astronomers captured these dramatic images as they explored the firework-like debris from the birth of a group of massive stars, demonstrating that star formation can be a violent and explosive process too.
On 27 April 2016, engineers unveiled the giant golden mirror of NASA’s James Webb Space Telescope as part of the integration and testing of the infrared telescope. The 6.5-metre mirror is composed of 18 segments the size of a coffee table. Each is made from beryllium, weighs about 46 pounds (20 kg) and coated with vaporised gold to reflect infrared light.