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Reference Terms
from Wikipedia, the free encyclopedia

Definition of planet

The definition of "planet" has for some time been the subject of intense debate.

Note:   The above text is excerpted from the Wikipedia article "Definition of planet", which has been released under the GNU Free Documentation License.
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March 28, 2024

Astronomers have found that a previously quiet black hole, which sits at the center of a galaxy about 800 million light years away, has suddenly erupted, giving off plumes of gas every 8.5 days ...
A new image from the Event Horizon Telescope (EHT) collaboration has uncovered strong and organized magnetic fields spiraling from the edge of the supermassive black hole Sagittarius A* (Sgr A*). ...
Astronomers have identified what could be two of the Milky Way's earliest building blocks: Named 'Shakti' and 'Shiva', these appear to be the remnants of two galaxies that merged between 12 and 13 billion years ago with an early version of the Milky ...
A new study challenges the current model of the universe by showing that, in fact, it has no room for dark ...

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