Seeing Dyson Civilizations

In summary, the circumstellar shells of Dyson civilizations-at temperatures ~300 degrees K and radii ~1 a.u.--can be detected with existing telescopes and state-of-the-art infrared detectors in the 8-13-u window out to distances of several hundred parsecs. But discrimination of Dyson civilizations from naturally occurring low-temperature objects is very difficult, unless Dyson civilizations have some further distinguishing feature, such as monochromatic radio-frequency emission.

 Science is Growing Bigger and Bigger

The history of physics is littered with unrealized grand experiments: old blueprints buried in file drawers, half-built machinery packed in crates, excavated earth filled with pooling rainwater—the detritus of Big Science. As the frontier of human knowledge pushes forward, so, too, does the cost and the complexity of further exploration. Telescopes grow larger. Space is probed at greater depths. Atomic particles are smashed more forcefully. Many scientific questions now demand resources tha...

 Science is Monism

Monism is the default worldview of natural science. In science, an explanation has to be grounded in empirical evidence. In a slightly different take, for a statement to be considered a scientific explanation, it must be falsifiable—there has to be some kind of test that could be applied to the statement to prove it wrong. For example, the statement that the moon is made of cheese is a scientific statement because it can be falsified. Facts can be brought to bear on the claim (such as the d...

 Thomas Jefferson was a Scientist

Thomas Jefferson was a scientist. That's how he described himself. When you visit his home at Monticello, Virginia, the moment you enter its portals you find ample evidence of his scientific interests - not just in his immense and varied library, but in copying machines, automatic doors, telescopes and other instruments, some at the cutting edge of early nineteenth-century technology. Some he invented, some he copied, some he purchased. He compared the plants and animals in America with Euro...