Scientists have detected the 1st type of molecule that ever formed in the universe – a combination of helium and hydrogen called helium hydride – in a planetary nebula near the constellation Cygnus.

Professional and amateur astronomers are gearing up to observe asteroid 1999 KW4 – oddly shaped, about a mile wide, with a companion moon – around its closest approach on May 25, 2019. Charts here for amateur observers across the globe.