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Can a galaxy (like NGC 3810 in this case) have a classical spiral structure and also be already dead? ESA/Hubble and NASA

Is our Milky Way galaxy a zombie, already dead and we don’t know it?

Extragalactic astrophysicists want to know how and why galaxies stop forming stars, change their shape and fade away. With help from citizen scientists, they're figuring it out.
Supermassive black holes, containing as much mass as millions or billions of suns, exist at the centre of all galaxies, including our own Milky Way. NASA Goddard Space Flight Center

Speaking with: Meg Urry on supermassive black holes

Tanya Hill speaks with Meg Urry about distant galaxies and the supermassive black holes that lurk in their centres.
Locating Nova Sagittarii 2015 No. 2, the new bright light in the sky. Alex Cherney

Ancient nova is now thought to be a stellar collision

A new light in the southern night sky is thought to be an exploding star. It comes as astronomers reveal an ancient nova explosion is now thought to have been two stars colliding.
Artist’s impression of two white dwarf stars destined to merge and create a Type Ia supernova in 700-million years time. ESO/L. Calçada

White dwarf merger is set to prove supernova theory

Two white dwarfs found orbiting each other at the centre of a planetary nebula are now known to have enough mass that they will eventually trigger a special kind of supernova, according to research published…
Harvard-Smithsonian Center for Astrophysics image of a supernova explosion discovered by Johannes Kepler in 1604. Flickr/X-ray: NASA/CXC/NCSU/M.Burkey et al; Infrared: NASA/JPL-Caltech

Our oceans give new insights on elements made in supernovae

Our understanding of heavy element production in supernovae, exploding stars way beyond our solar system, may need to change following some discoveries we have made looking not to the skies, but deep under…

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