Hottest – The Bug Nebula
The hottest star in the Milky Way is at the centre of the Bug Nebula 3,500 light years away. Its surface temperature is 35 times hotter than the Sun’s.
Oldest – Caffau’s star
A star with a very strange composition (full name SDSS J102915+172927) at the edge of our galaxy is suspected to be more than 13 billion years old.
Farthest – Big Bang galaxies
The most distant stars are over 13 billion light years away, in galaxies that formed shortly after the Big Bang.