cosmological constant
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The Universe: A Timeline of Discovery
Aaaaand she’s back! Sorry for the delay — school had me burnt out! Consider this: humanity has existed for just a few thousand years, and for most of that time, our existence has been constrained to one little blue mote…
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The Proof in the Afterglow
In 1915, Einstein published his theory of general relativity. This theory predicts that, since gravity works by bending space-time, it also determines the shape of space — and the shape of the universe as a whole. In 1929, Edwin Hubble…
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The Discovery of Dark Energy
In 1998, astronomers made an extraordinary discovery. Contrary to expectation, the expansion of the universe is accelerating. Astronomers wondered at first if their measurements were wrong; further measurements confirmed the results. And then confirmation of the expansion came in the…
