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Image of Sirius A and Sirius B taken by the Hubble Space Telescope. Sirius B, which is a white dwarf, can be seen as a faint point of light to the lower left of the much brighter Sirius A. A white dwarf is a stellar core remnant composed mostly of electron-degenerate matter.
17 maj 2019 · White dwarfs are the remnants left behind when medium-sized stars like our Sun reach the end of their lives. These stellar relics are extremely dense, with masses comparable to the Sun's confined to volumes comparable to that of Earth; just one cubic centimetre can weigh an incredible 1000 kilograms.
4 mar 2022 · White dwarfs are hot, dense remnants of stars. They are the last observable stage of evolution for low and medium-mass stars including our sun.
25 kwi 2023 · The white dot in the center of this nebula is a white dwarf; it’s lighting up the receding cloud of gas that once made up the star. The colors identify various elements like hydrogen,...
These white dwarfs were so faint that the brightest of them was no more luminous than a 100 watt light bulb seen at the moon's distance. M4 is located 7,000 light years away but is the nearest globular cluster to Earth.
15 cze 2023 · The discovery of a rare type of spinning white dwarf star in a binary star system – only the second one known – provides a new understanding into the role of magnetic fields in stellar evolution.
19 lip 2023 · White dwarfs, the extremely dense remnants left behind by most stars after their death, are characterized by a mass comparable to that of the Sun compressed into the size of an Earth-like...
