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The good thing about space is that – even though it has lots of dangerous stuff floating in it, and lots of exploding stars – it’s so big and empty that it almost doesn’t matter. NASA/CXC/U.Texas

Curious Kids: If a star explodes, will it destroy Earth?

Are there stars other than the Sun that might explode soon close to us? Yes, there are! As long as by 'soon' we mean within a million years.
The Sun is a star – but it’s not the only one. NASA/GSFC/Solar Dynamics Observatory

Curious Kids: Is there anything hotter than the Sun?

There are lots of places where it's much, much hotter than the Sun. And the amazing thing is that this heat also makes new atoms - tiny particles that have made their way long ago from stars to us.
The bubbly cloud, called Puppis A, is an irregular shock wave, generated by a supernova that would have been witnessed on Earth 3,700 years ago. NASA

Solving the mystery of the wimpy supernova

A massive star, with a radius 500 times that of our sun, exploded. But the supernova fizzled – it was weak and dim. Figuring out what went wrong led to insights about how rare binary star systems form.
Technicians prepare Swift’s UVOT for vibration testing on Aug. 1, 2002, more than two years before launch, in the High Bay Clean Room at NASA’s Goddard Space Flight Center in Greenbelt, Md. NASA's Goddard Space Flight Center

Swift’s telescope reveals birth, deaths and collisions of stars through 1 million snapshots in UV

The Swift Observatory passed a milestone: 1 million snapshots of the universe. These exquisite and revealing pictures have captured the births and deaths of stars, gravitational waves and comets.
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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