Gravitational waves eject black hole from galaxy.
The following images and text illustrate how two supermassive black holes merged to form a single black hole which was then ejected from its parent galaxy…
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Astronomía — Exploración espacial.
Tema 3. 3. – Relatividad general de Einstein, agujeros negros y universos abiertos y cerrados.
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Seven Worlds for TRAPPIST-1
“Seven worlds orbit the ultracool dwarf star TRAPPIST-1, a mere 40 light-years away…”
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Wolf-Rayet Star 124: Picture of the Day.
“Some stars explode in slow motion. Rare, massive Wolf-Rayet stars are so tumultuous and hot that they are slowly disintegrating right before our telescopes…”
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Adult | Education | Humanities
Remarks on an autonomous model for public libraries, part 2.
These remarks further explore ideas noted in “A sketch for a public library model, part 1”.
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Adult | Education | Humanities
A sketch for a public library model.
Part 1: a discussion of key educational ideas.