u3a

Littleborough

9th April 2026 Astronomy meeting

Today's meeting addressed some of the most fascinating objects in the Universe, including White Dwarfs, Neutron stars and Pulsars.

A white dwarf is the incredibly dense core of a dead star, left behind when the star exhausted its fuel. Our sun will become a white dwarf one day.

Neutron stars spin multiple times a second, are highly magnetised and spit out rotating beams of radiation and are formed when a medium-sized star reaches the end of its life and explodes as a supernova, after which it leaves an incredibly dense core behind.

Pulsars, are rapidly spinning neutron stars that beam radiation across space and are sometimes referred to as cosmic lighthouses. These stellar remnants form from supernova explosions, creating objects so dense that a teaspoon weighs billions of tons.