Cosmology


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Cosmology
The cosmic now

Are you here now? Impossible to say. The idea that any group of events can truly happen at once is just an illusion

Anthony Aguirre

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Astronomy
Monsters in the dark

The Universe’s biggest galaxies could hold the key to the birth of the cosmos. Why are these behemoths so hard to find?

Matthew Bothwell

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History of science
Curving the Universe

A century ago, a team of scientists chased the arc of starlight across a total eclipse to prove Einstein right on relativity

Matthew Stanley

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History of ideas
A revolution in time

Once local and irregular, time-keeping became universal and linear in 311 BCE. History would never be the same again

Paul J Kosmin

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Physics
Time after time

The question of whether time moves in a loop or a line has occupied human minds for millennia. Has physics found the answer?

Paul Halpern

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Cosmology
Anthropic arrogance

Claims that the Universe is designed for humans raise far more troubling questions than they can possibly answer

David P Barash

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Cosmology
How cosmic is the cosmos?

Ever since Heisenberg and Tagore, physicists have flirted with Eastern philosophy. Is there anything in the romance?

Zeeya Merali

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Space exploration
What if ET is an AI?

After centuries searching for extraterrestrial life, we might find that first contact is not with organic creatures at all

Caleb Scharf

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History of science
Behold: science as seeing

One astronomer’s dimpled pie is another’s cratered moon. How can our mind’s eye learn to see the new and unexpected?

Gene Tracy

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Philosophy of science
Is the Universe a conscious mind?

Cosmopsychism might seem crazy, but it provides a robust explanatory model for how the Universe became fine-tuned for life

Philip Goff

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History of science
Life in hollow Earth

Is Earth inside the Universe, or vice versa? Since we can grasp only a model of reality, how do we know what’s real?

Joel Frohlich

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Physics
Radical dimensions

Relativity says we live in four dimensions. String theory says it’s 10. What are ‘dimensions’ and how do they affect reality?

Margaret Wertheim

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Ethics
The ethics of ET

The discovery of independent life beyond Earth would have deep philosophical implications for us, and our ideas of morality

Tim Mulgan

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Cosmology
Universe in a bubble

Maybe we don’t have to speculate about what life is like inside a bubble. It might be the only cosmic reality we know

J Richard Gott