News

Study confirms that novae are main source of lithium in the universe

3 November 2016 Astronomy Now

Lithium, like the majority of chemical elements, can trace its origins back to astrophysical phenomena, but its point of genesis was unclear. Recently, a group of researchers detected enormous quantities of beryllium-7 — an unstable element which decays into lithium — inside nova V5668 Sgr, which suggests that novae are the main source of lithium in the galaxy.

Picture This

Golden eye: James Webb Space Telescope’s mirror unveiled

28 April 2016 Astronomy Now

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.

News

Ancient dwarf galaxy preserves record of catastrophic event

22 March 2016 Astronomy Now

The lightest few chemical elements formed minutes after the Big Bang. Most heavier elements in the periodic table are created by stars, either from internal nuclear fusion or in catastrophic explosions. New observations of a dwarf galaxy discovered last year show that the heaviest elements, such as gold and lead, are likely left over from rare collisions between two neutron stars.