We don't know how to identify intelligence over interstellar distances, so what we do instead is use technology for a proxy.

Life has evolved to thrive in environments that are extreme only by our limited human standards: in the boiling battery acid of Yellowstone hot springs, in the cracks of permanent ice sheets, in the cooling waters of nuclear reactors, miles beneath the Earth's crust, in pure salt crystals, and inside the rocks of the dry valleys of Antarctica.

The existence of life beyond Earth is an ancient human concern. Over the years, however, attempts to understand humanity's place in the cosmos through science often got hijacked by wishful thinking or fabricated tales.

Our television transmitters leak out from the Earth. And actually, there's a sphere surrounding the Earth from the earliest television signals, maybe 70 years ago, that's going out one light year per year. But it's really weak.

To that class we may leave it to refine the vernacular dialects of the country, to enrich those dialects with terms of science borrowed from the Western nomenclature, and to render them by degrees fit vehicles for conveying knowledge to the great mass of the population.

I think the answer of course is that space and time are not these hard external objects. Again we're, scientists have been building from one side of nature (physics) without considering the other side (life in consciousness). Neither side exists without the other. They cannot be divorced from one another or else there is no reality.

Marie Curie is in a class all her own as the first female winner and still the only person to win the Nobel Prize in two different science categories. An astounding scientist.

And with each day that passed, the gulf broadened and my isolation became more accentuated. In such a situation, the discovery that my experience was not unique, that it had also been that of other Spanish intellectuals, became very important for me.