Ah, yes, the three states of matter: Solids, liquids, and gases. What a simple way to understand our physical world. Of course, if you remember a bit of high school science, you probably recall a ...
An illustration of an active black hole, one that accretes matter and accelerates a portion of it outwards in two perpendicular jets. The normal matter undergoing an acceleration like this describes ...
An example of 3-D distribution of dark matter reconstructed via tomographic methods using the weak lensing technique combined with the redshift estimates of the background galaxies. Disclaimer: AAAS ...
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