Discovery improves astronomical 'tape measure' scientists use to calculate acceleration of expansion of universe
(Phys.org)—Light from two massive stars that exploded hundreds of millions of years ago recently reached Earth, and each event was identified as a supernova. A supernova discovered Feb. 6 exploded about 450 million years ...
Breakthrough study models dying stars in a lab
A team of scientists has successfully reproduced conditions in one of the most hostile environments in the galaxy, enabling them to find out more about how atoms behave in these extreme settings.
Neon lights up exploding stars
(Phys.org)—An international team of nuclear astrophysicists has shed new light on the explosive stellar events known as novae.
A cosmic holiday ornament, Hubble-style
(Phys.org)—'Tis the season for holiday decorating and tree-trimming. Not to be left out, astronomers using NASA's Hubble Space Telescope have photographed a festive-looking nearby planetary nebula called ...
How white dwarfs mimic black holes
(Phys.org)—A remarkable observation by astronomers from the University of Southampton has been published in one of the world's foremost astrophysics research journals.
Can life emerge on planets around cooling stars?
(Phys.org)—Astronomers find planets in strange places and wonder if they might support life. One such place would be in orbit around a white or brown dwarf. While neither is a star like the sun, both glow and so could be ...
Failed explosions explain most peculiar supernovae
Supercomputer simulations have revealed that a type of oddly dim, exploding star is probably a class of duds—one that could nonetheless throw new light on the mysterious nature of dark energy.
Astronomers pin down origins of 'mile markers' for expansion of universe
(Phys.org)—A study using a unique new instrument on the world's largest optical telescope has revealed the likely origins of especially bright supernovae that astronomers use as easy-to-spot "mile markers" ...
WISE discovers mystery dust around a dead star with a close companion
(Phys.org)—Astronomers using data from NASA's Wide-field Infrared Survey Explorer, or WISE, have discovered dust in an unusual place—just outside the reach of a binary star system with a short 3-hour ...
The white widow model: A new scenario for the birth of Type Ia supernovae
J. Craig Wheeler has studied the exploding stars called supernovae for more than four decades. Now he has a new idea on the identity of the "parents" of one of the most important types of supernovae—the ...
The Helix nebula: Bigger in death than life
(Phys.org)—A dying star is refusing to go quietly into the night, as seen in this combined infrared and ultraviolet view from NASA's Spitzer Space Telescope and the Galaxy Evolution Explorer (GALEX), which ...
New study suggests long ago brightest star explosion was rapid type Ia supernova
White dwarfs' tidal effects may create novae, study says
(Phys.org)—Theoretical physicists at Cornell may have found a new way to explain the formation of novae, stars that suddenly become very bright then quickly fade.
Hubble watching ancient orbs
(Phys.org)—This sparkling picture taken by the NASA/ESA Hubble Space Telescope shows the center of globular cluster M 4. The power of Hubble has resolved the cluster into a multitude of glowing orbs, each ...