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Posts Tagged "interstellar travel"

Life, Unbounded

The Unstoppable Extinction And Fermi’s Paradox

Really, this is what I evolved into? (Images used: Stephen Ausmus, USDA ARS, Matt Martyniuk)

There has been a lot of discussion recently about the evidence that we are currently within a period of mass extinction, the kind of event that will show up in the fossil record a few million years from now as a clear discontinuity, a radical change in the diversity of life on the planet. This [...]

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Life, Unbounded

The Panspermia Paradox

Seed dispersal in the galactic garden? (Image adapted from A. Valavanis)

The notion of panspermia – the transferral of viable organisms between planets, and even between star systems, seems to be getting a bit more attention these days. One only has to open this previous week’s copy of TIME magazine and there it is, via a very nice piece by Jeffrey Kluger on ‘Aliens Among Us‘. [...]

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Life, Unbounded

‘Mass Effect’ Solves The Fermi Paradox?

Who's been munching my galaxy?

Right now, all across the planet, millions of people are engaged in a struggle with enormous implications for the very nature of life itself. Making sophisticated tactical decisions and wrestling with chilling and complex moral puzzles, they are quite literally deciding the fate of our existence. Or at least they are pretending to. The video [...]

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Observations

What Interstellar Gets Wrong about Interstellar Travel

A starship travels through a cosmic wormhole

Christopher Nolan’s new film, Interstellar, is a near-future tale of astronauts departing a dying Earth to travel to Saturn, then through a wormhole to another galaxy, all in search of somewhere else humanity could call home. It’s a gorgeous, ambitious work, with outstanding performances from a star-studded cast augmented by high-fidelity visual effects and a [...]

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Observations

Despite Tantalizing Hints, Voyager 1 Has Not Crossed into the Interstellar Medium

Voyager 1 and Voyager 2 leaving the solar system

Voyager 1 is going, going … not quite gone. The well-traveled NASA spacecraft, launched in 1977, is headed out of the heliosphere, the fluctuating bubble in space inflated by plasma streaming outward from the sun. For years Voyager 1 has been closing in on the heliopause—the outer edge of the heliosphere—where the solar wind meets [...]

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Observations

NASA’s Voyager 1 Spacecraft May Not Be Near Edge of Solar System after All [Updated]

Voyager 1 and Voyager 2 in relation to the solar system

It’s been a long, strange trip out of the solar system for NASA’s Voyager 1 spacecraft, and it may be a bit longer still. Voyager 1, which launched 35 years ago today, has ventured farther from Earth than any other spacecraft in history. Voyager 1 is now 18.2 billion kilometers from Earth—so distant that it [...]

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