News tagged with white dwarfs

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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 ...

Oct 04, 2012
3.5 / 5 (2) 2 | with audio podcast

New Greek observatory sheds light on old star

(Phys.org)—Continuing a tradition stretching back more than 25 centuries, astronomers have used the new 2.3-m 'Aristarchos' telescope, sited at Helmos Observatory (2340m high) in the Pelοponnese Mountains ...

Feb 28, 2013
3 / 5 (2) 0

Are stellar explosions created equal?

Cosmic distances are difficult to grasp and no less difficult to measure. When it comes to other galaxies or even remote parts of our own Milky Way, distance measurements are nothing but assessments, derived from indirect ...

Aug 22, 2011
5 / 5 (1) 7

Binary white dwarf stars

(PhysOrg.com) -- When a star like our sun gets to be very old, after another seven billion years or so, it will no longer be able to sustain burning its nuclear fuel.

May 04, 2011
2 / 5 (2) 0